Mean, Median, Mode, Range, IQR

Front

What is the mean?

Back

The mean is 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 median is the middle value in a set of numbers when they are arranged in 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 mode is the number that appears most frequently in a set of numbers.

Front

What is the range?

Back

The range is the difference between the highest and lowest values in a set of numbers.

Front

What is the interquartile range (IQR)?

Back

The IQR is the difference between the first quartile (Q1) and the third quartile (Q3) in a data set, representing the middle 50% of the data.

Front

How do you find the lower quartile (Q1)?

Back

To find Q1, arrange the data in ascending order and find the median of the lower half of the data set.

Front

How do you find the upper quartile (Q3)?

Back

To find Q3, arrange the data in ascending order and find the median of the upper half of the data set.

Front

What is a quartile?

Back

A quartile is a type of quantile that divides a data set into four equal parts.

Front

What is the second quartile (Q2)?

Back

The second quartile (Q2) is the median of the data set.

Front

How do you calculate the mode in a data set?

Back

To calculate the mode, count how many times each number appears in the data set and identify the number(s) that appear most frequently.