Frequency Distribution

Frequency tables

Useful to summarize and organize
Understanding the nature of distribution
Shows how its divided into categories

Center

Avg value that shows the middle of the data set

Variation

Measure of how much the values differ from each other

Distribution

nature or shape of how the data is spread out

outliers

Data value that are far away from the majority of the other values

Time

Changing characteristics of data over time

Class limits

Smallest and largest values that belong to each class

Class boundaries

Found by adding upper limit of one class and the lower limit, then divide both by 2 after adding

Class mark

Lower and upper limits of class divided by

Class width

Difference between two lower class limits

Interval categories

Statement or portion of quantities included in category

Frequency

Number of data values in each class

Percentage

Relative frequency multiplied by 100