Data recorded in the sequence in which they are collected and before they are processed or ranked.

contains information on each member of a sample or population individually

Data sets are organized into tables, and data are displayed using tree

A frequency distribution for qualitative data lists all categories and the number of elements that belong to each of the categories

Data presented in the form of a frequency distribution are called (جت في الامتحان)

Relative frequency of a category = Frequency of that category / sum of all frequencies

The bar graph and the pie chart are two common types of graphs that are used to display …data

A graph made of bars whose heights represent the frequencies of respective categories.

To construct a bar graph (bar chart), we mark the various categories on the ............ axis

In the bar chart all categories are represented by intervals of the different width

In the bar chart We mark the frequencies on the …. axis

in bar graph We leave a small gap between adjacent bars

Bar charts can't also be used to give a visual comparison of two or more groups.

When constructing a comparative bar graph we use ...........to construct the scale on the vertical axis
(جت في الامتحان )

Pie charts : are most effective for summarizing data sets when there are not too many different categories

A circle divided into portions that represent the relative frequencies or percentages of apopulation or a sample belonging to different categories.

For quantitative data, an interval that includes all the values that fall within two numbers-the
lower and upper limits is called a ...

The............ is given by the midpoint of the upper limit of one class and the lower limit of the next class.

the difference between the two boundaries of a class gives the …

The............. or mark is obtained by dividing the sum of the two limits (or the two boundaries) of a class by 2

can be displayed in many common ways such as a histogram or a polygon