Central Tendency 

This is one way to organize and describe data is to see how the data fall together. This is measured using the mean, mode, and median scores to find the average score.

Two Major Headings 

Normal Distribution

Frequency Distribution- after ranking the data in average scores from highest to lowest the teacher evaluates how to group as a whole performed. After this ranking, it is helpful to complete a frequency distribution count on how often it occurs. 

Mean- is a set of given data is the sum of all observations divided by the number of observations. 

Mode- The number that occurs the most in a given list of numbers is called a mode.

Median- The value of the middlemost, obtained after arranging the data in ascending order, is called the median of the data.

Average Distribution 

Bimodal- The distribution has two modes.

Multimodal- A distribution with three or more modes.

Frequency Polygon- A graph that represents a data set.