Range and Interquartile Range

Front

What is the definition of range in statistics?

Back

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

Front

How do you calculate the range of a data set?

Back

Subtract the smallest value from the largest value.

Front

What is the definition of interquartile range (IQR)?

Back

The interquartile range is the difference between the first quartile (Q1) and the third quartile (Q3) in a data set.

Front

How do you find the interquartile range?

Back

Calculate Q3 - Q1.

Front

What do quartiles represent in a data set?

Back

Quartiles divide the data into four equal parts.

Front

What is the first quartile (Q1)?

Back

Q1 is the median of the lower half of the data set.

Front

What is the third quartile (Q3)?

Back

Q3 is the median of the upper half of the data set.

Front

If a data set has values 4, 4, 4, 4, 5, 6, 7, 7, 7, what is the interquartile range?

Back

3

Front

Given the data set 16, 28, 6, 19, 21, 15, 22, 33, 17, what is the range?

Back

27

Front

Calculate the interquartile range for the data set 17, 18, 18, 19, 20, 21, 21, 23, 25.

Back

4