Mean Median Mode Range IQR

Front

What is the mean?

Back

The average of a set of numbers, calculated by adding all the numbers together and dividing by the count of numbers.

Front

What is the median?

Back

The middle value in a list of numbers arranged in ascending order. If there is an even number of values, the median is the average of the two middle numbers.

Front

What is the mode?

Back

The number that appears most frequently in a data set.

Front

What is the range?

Back

The difference between the largest and smallest values in a data set.

Front

What is the interquartile range (IQR)?

Back

The difference between the upper quartile (Q3) and the lower quartile (Q1) in a data set.

Front

How do you find the median of a data set?

Back

Arrange the numbers in order and identify the middle number. If there are two middle numbers, calculate their average.

Front

How do you find the mode of a data set?

Back

Identify the number that occurs most frequently. If no number repeats, there is no mode.

Front

How do you calculate the mean of a data set?

Back

Add all the numbers together and divide by the total count of numbers.

Front

Given the data: 20, 22, 25, 29, 31, find the IQR.

Back

9 (Q3 - Q1 = 29 - 20 = 9).

Front

Given the data: 136, 150, 119, 150, 125, 140, find Q3.

Back

150 (After ordering the data: 119, 125, 136, 140, 150, 150, Q3 is the median of the upper half).