The mean has the advantage that its calculation includes each value of the data set.
Anonymous Quiz
90%
T
10%
F
A time-series plot can be constructed by thinking of the data set as a Trivariate data set
Anonymous Quiz
49%
T
51%
F
if mean > median, then ..................
Anonymous Quiz
84%
skewed to the right
12%
skewed to the left,
4%
symmetric histogram
if median > mean, then ..................
Anonymous Quiz
4%
symmetric histogram
8%
skewed to the right
88%
skewed to the left,
mean = 8 median = 5 mode = 3 (جت في الامتحان)
Anonymous Quiz
14%
symmetric histogram
9%
skewed to the left,
77%
skewed to the right
كدا اول محاضرتين اتبعتو هنكمل ان شاء الله النهارده
الأسئلة اللي تحت دي تبع محاضرة 1-2 برضو
الأسئلة اللي تحت دي تبع محاضرة 1-2 برضو
...... Statics is used for organizing , .......Statics is used for making decision
Anonymous Quiz
6%
Descriptive , Descriptive
84%
Descriptive , Inferential
3%
Inferential , Inferential
8%
Inferential , Descriptive
Population is being Studied Is Called (امتحان 2023)
Anonymous Quiz
22%
Sample
11%
Survey
4%
Society
63%
Target
A survey that includes every member of the population is called a sample.
Anonymous Quiz
21%
T
79%
F
Random sample, some members of the population may not have any chance of being selected in the sample.
Anonymous Quiz
17%
T
83%
F
Statistics .......... with the sample , Parameters are .........
Anonymous Quiz
2%
change , change
92%
change ,fixed
1%
fixed ,fixed
5%
fixed ,change
if we make interview with 200 Software Engineers in Egypt about the hardness the face in work . that mean
Anonymous Quiz
16%
Population = 200
78%
Sample = 200
3%
Stander deviation = 200
2%
none
.......... is the value of variable
Anonymous Quiz
83%
Observation or measure
9%
Observation or data set
6%
data set or Variable
2%
data set or measure
Which of the following is a quantitative variable?
Anonymous Quiz
10%
Colors in a box of crayons
63%
Finishing time for runners in a race
19%
Top ten spring break destinations
8%
Various caramel candies
Which type of data set consists of observations on a single attribute?
Anonymous Quiz
93%
Univariate data set
2%
Bivariate data set
2%
Multivariate data set
2%
None of the above
Which type of data set consists of observations on two different attributes?
Anonymous Quiz
2%
Univariate data set
3%
Double data set
93%
Bivariate data set
2%
Multivariate data set
مهمين اوي ي جماعه
Discrete Variable:
> Number of siblings a person has
> Number of cars in a parking lot
> Number of books on a shelf
Continuous Variable:
> Age of individuals
> Height of a person
> Weight of an object
Ordinal Variable:
> Education level (e.g., high school, bachelor's degree, master's degree)
> Customer satisfaction rating (e.g., very satisfied, satisfied, neutral, dissatisfied, very dissatisfied)
> Rank in a competition (e.g., first place, second place, third place)
Nominal Variable:
> Colors of cars (e.g., red, blue, green)
> Types of animals (e.g., cat, dog, bird)
> Political affiliation (e.g., Democrat, Republican, Independent)
Discrete Variable:
> Number of siblings a person has
> Number of cars in a parking lot
> Number of books on a shelf
Continuous Variable:
> Age of individuals
> Height of a person
> Weight of an object
Ordinal Variable:
> Education level (e.g., high school, bachelor's degree, master's degree)
> Customer satisfaction rating (e.g., very satisfied, satisfied, neutral, dissatisfied, very dissatisfied)
> Rank in a competition (e.g., first place, second place, third place)
Nominal Variable:
> Colors of cars (e.g., red, blue, green)
> Types of animals (e.g., cat, dog, bird)
> Political affiliation (e.g., Democrat, Republican, Independent)
Which sampling method ensures that each sample has an equal chance of being selected?
Anonymous Quiz
74%
Simple Random Sampling
3%
Stratified Random Sampling
1%
Cluster Sampling
3%
Systematic Random Sampling
18%
All above
In which sampling method are the population subgroups called strata?
Anonymous Quiz
3%
Simple Random Sampling
86%
Stratified Random Sampling
6%
Cluster Sampling
5%
Systematic Random Sampling