Statistics and Probability Vocabulary

An unbiased representation of a group

• Random Sample

• Inference

• Mean Absolute Deviation

Logical conclusions based off of theories that are known or assumed to be true.

• Inference

• Random Sample

• Mode

the average of a data set, found by adding all numbers together and then dividing the sum of the numbers by the number of numbers

• Median

• Mean

• Mode

the middle value (or midpoint) after all the data points have been arranged in value order as a list of numbers

• Range

• Median

• Mean

The most frequent number

• Mean

• Mode

• Mean Absolute Deviation

The difference between the lowest and highest values

• Mean

• Median

• Range

The average distance between each data point and the mean

• Box Plot

• Mean

• Mean Absolute Deviation

A linear graph that shows data frequencies along a number line

• Line Plot

• Box Plot

• Bar Graph

A way to organize data by making a column of the first digit and a column of the remaining digits

• Stem and Leaf Plot

• Line Plot

• Box Plot

When data has a long tail on one side or the other so it is not symmetrical

• Skewed

• Quartile

• Range