Range and Interquartile Range

Front

What is the range of a data set?

Back

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

Front

How do you calculate the range?

Back

Subtract the smallest value from the largest value in the data set.

Front

What is an interquartile range (IQR)?

Back

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

Front

How do you find the first quartile (Q1)?

Back

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

Front

How do you find the third quartile (Q3)?

Back

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

Front

What does it mean if the range is small?

Back

A small range indicates that the data points are close to each other.

Front

What does it mean if the IQR is large?

Back

A large IQR indicates that there is a wide spread in the middle 50% of the data.

Front

How do you find the median of a data set?

Back

Arrange the data in order and find the middle value.

Front

What is the median of the data set: 23, 33, 25, 16, 27, 43, 29, 40, 35?

Back

The median is 29.

Front

What is the first quartile (Q1) of the data set: 23, 33, 25, 16, 27, 43, 29, 40, 35?

Back

The first quartile (Q1) is 24.