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Link- https://cognitiveclass.ai/courses/data-analysis-with-python-a8b1f3df-3083-49a0-a49e-4dee8dd4999d
1. Python for data science
Link- https://cognitiveclass.ai/courses/python-for-data-science
2. SQL and relational databases 101
Link- https://cognitiveclass.ai/courses/learn-sql-relational-databases
3. Machine learning with python
Link- https://cognitiveclass.ai/courses/machine-learning-with-python
4. Data science with python
Link- https://cognitiveclass.ai/learn/data-science-with-python
5. Data analytics with python
Link- https://cognitiveclass.ai/courses/data-analysis-with-python-a8b1f3df-3083-49a0-a49e-4dee8dd4999d
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Python for Data Science
This introduction to Python will kickstart your learning of Python for data science, as well as programming in general. This beginner-friendly Python course will take you from zero to programming in Python in a matter of hours. Upon its completion, you'll…
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Top 10 Excel Interview Questions with Answers 😄👇
1. Question: What is the difference between CONCATENATE and "&" in Excel?
Answer: CONCATENATE and "&" both combine text, but "&" is more concise. For example, =A1&B1 achieves the same result as =CONCATENATE(A1, B1).
2. Question: How can you freeze rows and columns simultaneously in Excel?
Answer: Use the "Freeze Panes" option under the "View" tab. Select the cell below and to the right of the rows and columns you want to freeze, and then click on "Freeze Panes."
3. Question: Explain the VLOOKUP function and when would you use it?
Answer: VLOOKUP searches for a value in the first column of a range and returns a corresponding value in the same row from another column. It's useful for looking up information in a table based on a specific criteria.
4. Question: What is the purpose of the IFERROR function?
Answer: IFERROR is used to handle errors in Excel formulas. It returns a specified value if a formula results in an error, and the actual result if there's no error.
5. Question: How do you create a PivotTable, and what is its purpose?
Answer: To create a PivotTable, select your data, go to the "Insert" tab, and choose "PivotTable." It summarizes and analyzes data in a spreadsheet, allowing you to make sense of large datasets.
6. Question: Explain the difference between relative and absolute cell references.
Answer: Relative references change when you copy a formula to another cell, while absolute references stay fixed. Use a $ symbol to make a reference absolute (e.g., $A$1).
7. Question: What is the purpose of the INDEX and MATCH functions?
Answer: INDEX returns a value in a specified range based on the row and column number, while MATCH searches for a value in a range and returns its relative position. Combined, they provide a flexible way to look up data.
8. Question: How can you find and remove duplicate values in Excel?
Answer: Use the "Remove Duplicates" feature under the "Data" tab. Select the range containing duplicates, go to "Data" -> "Remove Duplicates," and choose the columns to check for duplicates.
9. Question: Explain the difference between a workbook and a worksheet.
Answer: A workbook is the entire Excel file, while a worksheet is a single sheet within that file. Workbooks can contain multiple worksheets.
10. Question: What is the purpose of the COUNTIF function?
Answer: COUNTIF counts the number of cells within a range that meet a specified condition. For example, =COUNTIF(A1:A10, ">50") counts the cells in A1 to A10 that are greater than 50.
1. Question: What is the difference between CONCATENATE and "&" in Excel?
Answer: CONCATENATE and "&" both combine text, but "&" is more concise. For example, =A1&B1 achieves the same result as =CONCATENATE(A1, B1).
2. Question: How can you freeze rows and columns simultaneously in Excel?
Answer: Use the "Freeze Panes" option under the "View" tab. Select the cell below and to the right of the rows and columns you want to freeze, and then click on "Freeze Panes."
3. Question: Explain the VLOOKUP function and when would you use it?
Answer: VLOOKUP searches for a value in the first column of a range and returns a corresponding value in the same row from another column. It's useful for looking up information in a table based on a specific criteria.
4. Question: What is the purpose of the IFERROR function?
Answer: IFERROR is used to handle errors in Excel formulas. It returns a specified value if a formula results in an error, and the actual result if there's no error.
5. Question: How do you create a PivotTable, and what is its purpose?
Answer: To create a PivotTable, select your data, go to the "Insert" tab, and choose "PivotTable." It summarizes and analyzes data in a spreadsheet, allowing you to make sense of large datasets.
6. Question: Explain the difference between relative and absolute cell references.
Answer: Relative references change when you copy a formula to another cell, while absolute references stay fixed. Use a $ symbol to make a reference absolute (e.g., $A$1).
7. Question: What is the purpose of the INDEX and MATCH functions?
Answer: INDEX returns a value in a specified range based on the row and column number, while MATCH searches for a value in a range and returns its relative position. Combined, they provide a flexible way to look up data.
8. Question: How can you find and remove duplicate values in Excel?
Answer: Use the "Remove Duplicates" feature under the "Data" tab. Select the range containing duplicates, go to "Data" -> "Remove Duplicates," and choose the columns to check for duplicates.
9. Question: Explain the difference between a workbook and a worksheet.
Answer: A workbook is the entire Excel file, while a worksheet is a single sheet within that file. Workbooks can contain multiple worksheets.
10. Question: What is the purpose of the COUNTIF function?
Answer: COUNTIF counts the number of cells within a range that meet a specified condition. For example, =COUNTIF(A1:A10, ">50") counts the cells in A1 to A10 that are greater than 50.
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5. analysing and visualizing data using Excel
Link- https://www.edx.org/learn/excel/microsoft-analyzing-and-visualizing-data-with-excel
1. Microsoft Azure fundamentals
Link- https://learn.microsoft.com/en-us/training/paths/microsoft-azure-fundamentals-describe-cloud-concepts/
2. Power BI data analyst associate
Link- https://learn.microsoft.com/en-us/credentials/certifications/power-bi-data-analyst-associate/?practice-assessment-type=certification
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TOP 10 data analytics interview questions.
1. Question: What is Tableau and how does it differ from traditional business intelligence tools?
Answer: Tableau is a data visualization and business intelligence tool that allows users to connect, visualize, and share insights from their data. It stands out for its user-friendly interface and real-time analytics capabilities.
2. Question: Explain the difference between a Tableau extract and a live connection.
Answer: A Tableau extract is a snapshot of data stored in a Tableau data extract (.hyper) file, providing faster performance. A live connection directly queries the data source in real-time.
3. Question: How can you create a calculated field in Tableau?
Answer: To create a calculated field, right-click on the data pane, select "Create Calculated Field," enter a formula, and click OK. Calculated fields allow users to perform custom calculations on the data.
4. Question: What is a dual-axis chart in Tableau, and when would you use it?
Answer: A dual-axis chart combines two different chart types on the same axes. It is useful when you want to compare two measures with different scales in a single view.
5. Question: How do you publish a Tableau dashboard to Tableau Server?
Answer: Use Tableau Desktop to open the dashboard, navigate to Server -> Publish Workbook, select the project and folder on Tableau Server, and click "Publish."
6. Question: Explain the purpose of parameters in Tableau.
Answer: Parameters allow users to create dynamic, interactive elements in a Tableau workbook. They enable users to input values that can be referenced in calculations, filters, and reference lines.
7. Question: What is the role of the Tableau Prep tool?
Answer: Tableau Prep is used for data preparation and cleaning. It helps users shape, clean, and combine data from various sources before analyzing it in Tableau.
8. Question: How does Tableau handle geographical data?
Answer: Tableau has built-in geocoding and mapping capabilities. It can automatically recognize geographic fields and generate maps, allowing users to visualize spatial data.
9. Question: What is the purpose of the LOD (Level of Detail) expressions in Tableau?
Answer: LOD expressions enable users to control the granularity of the aggregation independently of the view. This is useful when you want to perform calculations at a different level than the view.
10. Question: How can you create a dashboard in Tableau, and what components can it include?
Answer: To create a dashboard, drag sheets into the dashboard tab, arrange them, and add objects like text, images, and web pages. Components can include sheets, filters, parameters, and legends, creating an interactive and comprehensive view of the data.
Hope it helps :)
1. Question: What is Tableau and how does it differ from traditional business intelligence tools?
Answer: Tableau is a data visualization and business intelligence tool that allows users to connect, visualize, and share insights from their data. It stands out for its user-friendly interface and real-time analytics capabilities.
2. Question: Explain the difference between a Tableau extract and a live connection.
Answer: A Tableau extract is a snapshot of data stored in a Tableau data extract (.hyper) file, providing faster performance. A live connection directly queries the data source in real-time.
3. Question: How can you create a calculated field in Tableau?
Answer: To create a calculated field, right-click on the data pane, select "Create Calculated Field," enter a formula, and click OK. Calculated fields allow users to perform custom calculations on the data.
4. Question: What is a dual-axis chart in Tableau, and when would you use it?
Answer: A dual-axis chart combines two different chart types on the same axes. It is useful when you want to compare two measures with different scales in a single view.
5. Question: How do you publish a Tableau dashboard to Tableau Server?
Answer: Use Tableau Desktop to open the dashboard, navigate to Server -> Publish Workbook, select the project and folder on Tableau Server, and click "Publish."
6. Question: Explain the purpose of parameters in Tableau.
Answer: Parameters allow users to create dynamic, interactive elements in a Tableau workbook. They enable users to input values that can be referenced in calculations, filters, and reference lines.
7. Question: What is the role of the Tableau Prep tool?
Answer: Tableau Prep is used for data preparation and cleaning. It helps users shape, clean, and combine data from various sources before analyzing it in Tableau.
8. Question: How does Tableau handle geographical data?
Answer: Tableau has built-in geocoding and mapping capabilities. It can automatically recognize geographic fields and generate maps, allowing users to visualize spatial data.
9. Question: What is the purpose of the LOD (Level of Detail) expressions in Tableau?
Answer: LOD expressions enable users to control the granularity of the aggregation independently of the view. This is useful when you want to perform calculations at a different level than the view.
10. Question: How can you create a dashboard in Tableau, and what components can it include?
Answer: To create a dashboard, drag sheets into the dashboard tab, arrange them, and add objects like text, images, and web pages. Components can include sheets, filters, parameters, and legends, creating an interactive and comprehensive view of the data.
Hope it helps :)
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Top 10 Alteryx Interview Questions and Answers 😄👇
1. Question: What is Alteryx, and how does it differ from traditional ETL tools?
Answer: Alteryx is a self-service data preparation and analytics platform. Unlike traditional ETL tools, it empowers users with a user-friendly interface, allowing them to blend, cleanse, and analyze data without extensive coding.
2. Question: Explain the purpose of the Input Data tool in Alteryx.
Answer: The Input Data tool is used to connect to and bring in data from various sources. It supports a wide range of file formats and databases.
3. Question: How does the Summarize tool differ from the Cross Tab tool in Alteryx?
Answer: The Summarize tool aggregates and summarizes data, while the Cross Tab tool pivots data, transforming rows into columns and vice versa.
4. Question: What is the purpose of the Browse tool in Alteryx?
Answer: The Browse tool is used for data inspection. It allows users to view and understand the structure and content of their data at different points in the workflow.
5. Question: How can you handle missing or null values in Alteryx?
Answer: Use the Imputation tool to fill in missing values or the Filter tool to exclude records with null values. Alteryx provides several tools for data cleansing and handling missing data.
6. Question: Explain the role of the Formula tool in Alteryx.
Answer: The Formula tool is used for creating new fields and performing calculations on existing data. It supports a variety of functions and expressions.
7. Question: What is the purpose of the Output Data tool in Alteryx?
Answer: The Output Data tool is used to save or output the results of an Alteryx workflow to different file formats or databases.
8. Question: How does Alteryx handle spatial data, and what tools are available for spatial analysis?
Answer: Alteryx supports spatial data processing through tools like the Spatial Info, Spatial Match, and the Create Points tools. These tools enable users to perform spatial analytics.
9. Question: Explain the concept of Iterative Macros in Alteryx.
Answer: Iterative Macros in Alteryx allow users to create workflows that iterate over a set of data multiple times, enabling more complex and dynamic data processing.
10. Question: How can you schedule and automate workflows in Alteryx?
Answer: Alteryx provides the Scheduler and the Gallery platform for scheduling and automating workflows. Users can publish workflows to the Gallery and set up schedules for execution.
1. Question: What is Alteryx, and how does it differ from traditional ETL tools?
Answer: Alteryx is a self-service data preparation and analytics platform. Unlike traditional ETL tools, it empowers users with a user-friendly interface, allowing them to blend, cleanse, and analyze data without extensive coding.
2. Question: Explain the purpose of the Input Data tool in Alteryx.
Answer: The Input Data tool is used to connect to and bring in data from various sources. It supports a wide range of file formats and databases.
3. Question: How does the Summarize tool differ from the Cross Tab tool in Alteryx?
Answer: The Summarize tool aggregates and summarizes data, while the Cross Tab tool pivots data, transforming rows into columns and vice versa.
4. Question: What is the purpose of the Browse tool in Alteryx?
Answer: The Browse tool is used for data inspection. It allows users to view and understand the structure and content of their data at different points in the workflow.
5. Question: How can you handle missing or null values in Alteryx?
Answer: Use the Imputation tool to fill in missing values or the Filter tool to exclude records with null values. Alteryx provides several tools for data cleansing and handling missing data.
6. Question: Explain the role of the Formula tool in Alteryx.
Answer: The Formula tool is used for creating new fields and performing calculations on existing data. It supports a variety of functions and expressions.
7. Question: What is the purpose of the Output Data tool in Alteryx?
Answer: The Output Data tool is used to save or output the results of an Alteryx workflow to different file formats or databases.
8. Question: How does Alteryx handle spatial data, and what tools are available for spatial analysis?
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9. Question: Explain the concept of Iterative Macros in Alteryx.
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2. Critical thinking course
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Rhetoric: The Art of Persuasive Writing and Public Speaking | Harvard University
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1. Question: What is Power BI?
Answer: Power BI is a business analytics service by Microsoft that provides interactive visualizations and business intelligence capabilities with an interface simple enough for end-users to create their reports and dashboards.
2. Question: Differentiate between Power BI Desktop, Power BI Service, and Power BI Mobile.
Answer: Power BI Desktop is used for creating reports, Power BI Service (or Power BI Online) is the cloud service for sharing and collaborating on reports, and Power BI Mobile allows users to access reports on mobile devices.
3. Question: Explain the role of Power Query in Power BI.
Answer: Power Query is used for data transformation and shaping. It allows users to connect to various data sources, clean and transform data before loading it into Power BI for analysis.
4. Question: What is DAX in Power BI, and why is it important?
Answer: DAX (Data Analysis Expressions) is a formula language used for creating custom calculations in Power BI. It is important as it enables users to create sophisticated measures and calculated columns.
5. Question: How do you create relationships between tables in Power BI?
Answer: In Power BI Desktop, go to the "Model" view, drag and drop fields from one table to another to create relationships based on common keys.
6. Question: What is the difference between a calculated column and a measure in Power BI?
Answer: A calculated column is a column added to a table, computed row by row, while a measure is a formula applied to a set of data, providing a dynamic calculation based on the context.
7. Question: How can you implement row-level security in Power BI?
Answer: Row-level security in Power BI can be implemented by creating roles in Power BI Desktop and defining filters at the row level based on user roles.
8. Question: Explain the purpose of the Power BI Gateway.
Answer: The Power BI Gateway allows for a secure connection between Power BI services and on-premises data sources. It facilitates refreshing datasets and running scheduled refreshes.
9. Question: What is a Power BI dashboard?
Answer: A Power BI dashboard is a single-page, interactive view of your data that provides a consolidated and visualized summary of key metrics. It can include visuals, images, and live data.
10. Question: How can you share a Power BI report with others?
Answer: Power BI reports can be shared through the Power BI service. Publish the report to the Power BI service, and then share it with specific users or distribute it widely within an organization.
1. Question: What is Power BI?
Answer: Power BI is a business analytics service by Microsoft that provides interactive visualizations and business intelligence capabilities with an interface simple enough for end-users to create their reports and dashboards.
2. Question: Differentiate between Power BI Desktop, Power BI Service, and Power BI Mobile.
Answer: Power BI Desktop is used for creating reports, Power BI Service (or Power BI Online) is the cloud service for sharing and collaborating on reports, and Power BI Mobile allows users to access reports on mobile devices.
3. Question: Explain the role of Power Query in Power BI.
Answer: Power Query is used for data transformation and shaping. It allows users to connect to various data sources, clean and transform data before loading it into Power BI for analysis.
4. Question: What is DAX in Power BI, and why is it important?
Answer: DAX (Data Analysis Expressions) is a formula language used for creating custom calculations in Power BI. It is important as it enables users to create sophisticated measures and calculated columns.
5. Question: How do you create relationships between tables in Power BI?
Answer: In Power BI Desktop, go to the "Model" view, drag and drop fields from one table to another to create relationships based on common keys.
6. Question: What is the difference between a calculated column and a measure in Power BI?
Answer: A calculated column is a column added to a table, computed row by row, while a measure is a formula applied to a set of data, providing a dynamic calculation based on the context.
7. Question: How can you implement row-level security in Power BI?
Answer: Row-level security in Power BI can be implemented by creating roles in Power BI Desktop and defining filters at the row level based on user roles.
8. Question: Explain the purpose of the Power BI Gateway.
Answer: The Power BI Gateway allows for a secure connection between Power BI services and on-premises data sources. It facilitates refreshing datasets and running scheduled refreshes.
9. Question: What is a Power BI dashboard?
Answer: A Power BI dashboard is a single-page, interactive view of your data that provides a consolidated and visualized summary of key metrics. It can include visuals, images, and live data.
10. Question: How can you share a Power BI report with others?
Answer: Power BI reports can be shared through the Power BI service. Publish the report to the Power BI service, and then share it with specific users or distribute it widely within an organization.
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Work From Home Job Openings
Qualification :- Graduate
Job Position :- Multiple Roles
Salary :- 4 LPA To 25 LPA
Apply Link👇 :-
https://bit.ly/44g42tZ
Apply before the link expires
Qualification :- Graduate
Job Position :- Multiple Roles
Salary :- 4 LPA To 25 LPA
Apply Link👇 :-
https://bit.ly/44g42tZ
Apply before the link expires
👍6
👍2
12 YouTube Channels To Master 12 Skills
FreeCodeCamp
Skill: Coding
Dive deeper into coding with FreeCodeCamp, offering comprehensive tutorials and projects for learners at all levels.
Link- https://youtube.com/@freecodecamp?si=_gSafOCoQ-kITTwT
TED
Skill: Diverse Knowledge & Inspiration Explore a vast array of subjects and get inspired by thought leaders worldwide with TED Talks.
Link- https://youtube.com/@TED?si=9VYxBxCgw-mPtUDH
Jeff Nippard
Skill: Fitness & Bodybuilding Jeff Nippard provides science-based training and nutrition advice, perfect for fitness enthusiasts and athletes.
Link- https://youtube.com/@JeffNippard?si=kck7iLdNiEBd_M5U
Veritasium
Skill: Science & Engineering Engage with fascinating scientific concepts and experiments with Veritasium, making complex ideas accessible and fun.
Link- https://youtube.com/@veritasium?si=nyS1nivvidDF24qX
Charisma on Command
Skill: Interpersonal Skills & Charisma Enhance your charisma and learn effective communication skills with Charisma on Command.
Link- https://youtube.com/@Charismaoncommand?si=hRd0nZvytwEtlC8P
Miles Beckler
Skill: Digital Marketing & Entrepreneurship Miles Beckler offers insights into digital marketing strategies and entrepreneurial growth.
Link- https://youtube.com/@MilesB?si=nrH8WR2_UrOOujBA
Ahrefs
Skill: SEO & Online Marketing Master the art of SEO and online marketing with Ahrefs' practical, data-driven advice.
Link- https://youtube.com/@AhrefsCom?si=Thnv1NpEJlEzHxvM
Khan Academy
Skill: General Education
Free educational resource covering subjects from mathematics to history, ideal for learners of all ages.
Link- https://youtube.com/@khanacademy?si=OPP8aG0evcQhSEiq
Mindvalley
Skill: Personal Growth
Mindvalley focuses on personal development, covering topics like mindfulness, productivity, and creativity.
Link- https://youtube.com/@Mindvalley?si=mte2yzDMzcE1hjJd
Athlean-X
Skill: Fitness & Athletic Training
Get expert advice on fitness and athletic training from renowned coach Jeff Cavaliere of Athlean-X.
Link- https://youtube.com/@athleanx?si=zqov6Lb3sIkTNAqj
Nerdwriter1
Skill: Critical Thinking & Cultural Analysis
Enjoy deep dives into cultural phenomena, art, and literature with Nerdwriter1's thought-provoking analysis.
Link- https://youtube.com/@Nerdwriter1?si=rOipzR4F9DV4o1zk
Vsauce
Skill: Curiosity & Learning
Explore curious and intriguing scientific questions with Vsauce, a channel that makes learning fun and engaging.
Link- https://youtube.com/@Vsauce?si=ZOt-clHCzV29Gp3-
FreeCodeCamp
Skill: Coding
Dive deeper into coding with FreeCodeCamp, offering comprehensive tutorials and projects for learners at all levels.
Link- https://youtube.com/@freecodecamp?si=_gSafOCoQ-kITTwT
TED
Skill: Diverse Knowledge & Inspiration Explore a vast array of subjects and get inspired by thought leaders worldwide with TED Talks.
Link- https://youtube.com/@TED?si=9VYxBxCgw-mPtUDH
Jeff Nippard
Skill: Fitness & Bodybuilding Jeff Nippard provides science-based training and nutrition advice, perfect for fitness enthusiasts and athletes.
Link- https://youtube.com/@JeffNippard?si=kck7iLdNiEBd_M5U
Veritasium
Skill: Science & Engineering Engage with fascinating scientific concepts and experiments with Veritasium, making complex ideas accessible and fun.
Link- https://youtube.com/@veritasium?si=nyS1nivvidDF24qX
Charisma on Command
Skill: Interpersonal Skills & Charisma Enhance your charisma and learn effective communication skills with Charisma on Command.
Link- https://youtube.com/@Charismaoncommand?si=hRd0nZvytwEtlC8P
Miles Beckler
Skill: Digital Marketing & Entrepreneurship Miles Beckler offers insights into digital marketing strategies and entrepreneurial growth.
Link- https://youtube.com/@MilesB?si=nrH8WR2_UrOOujBA
Ahrefs
Skill: SEO & Online Marketing Master the art of SEO and online marketing with Ahrefs' practical, data-driven advice.
Link- https://youtube.com/@AhrefsCom?si=Thnv1NpEJlEzHxvM
Khan Academy
Skill: General Education
Free educational resource covering subjects from mathematics to history, ideal for learners of all ages.
Link- https://youtube.com/@khanacademy?si=OPP8aG0evcQhSEiq
Mindvalley
Skill: Personal Growth
Mindvalley focuses on personal development, covering topics like mindfulness, productivity, and creativity.
Link- https://youtube.com/@Mindvalley?si=mte2yzDMzcE1hjJd
Athlean-X
Skill: Fitness & Athletic Training
Get expert advice on fitness and athletic training from renowned coach Jeff Cavaliere of Athlean-X.
Link- https://youtube.com/@athleanx?si=zqov6Lb3sIkTNAqj
Nerdwriter1
Skill: Critical Thinking & Cultural Analysis
Enjoy deep dives into cultural phenomena, art, and literature with Nerdwriter1's thought-provoking analysis.
Link- https://youtube.com/@Nerdwriter1?si=rOipzR4F9DV4o1zk
Vsauce
Skill: Curiosity & Learning
Explore curious and intriguing scientific questions with Vsauce, a channel that makes learning fun and engaging.
Link- https://youtube.com/@Vsauce?si=ZOt-clHCzV29Gp3-
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Data Science Work From Home Internship Program 2024
Company Name - Emoolar Technology
Position title – Data Science Intern
Stipend :- Upto 30,000rs/Month
Experience:- Fresher
𝐃𝐨𝐰𝐧𝐥𝐨𝐚𝐝 & 𝐀𝐩𝐩𝐥𝐲 𝐍𝐨𝐰👇:-
https://bit.ly/3JIIOeN
You need to download the app to apply for this role .
Company Name - Emoolar Technology
Position title – Data Science Intern
Stipend :- Upto 30,000rs/Month
Experience:- Fresher
𝐃𝐨𝐰𝐧𝐥𝐨𝐚𝐝 & 𝐀𝐩𝐩𝐥𝐲 𝐍𝐨𝐰👇:-
https://bit.ly/3JIIOeN
You need to download the app to apply for this role .
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