Box & Whisker Plots

Front

What is a Box and Whisker Plot?

Back

A Box and Whisker Plot is a graphical representation of a data set that shows its minimum, first quartile (Q1), median, third quartile (Q3), and maximum.

Front

What does Q1 represent in a Box and Whisker Plot?

Back

Q1, or the first quartile, represents the value below which 25% of the data falls.

Front

How do you find the median in a data set?

Back

To find the median, arrange the data in ascending order and locate the middle value. If there is an even number of values, average the two middle values.

Front

What is the maximum value in a data set?

Back

The maximum value is the largest number in the data set.

Front

What does Q3 represent in a Box and Whisker Plot?

Back

Q3, or the third quartile, represents the value below which 75% of the data falls.

Front

How do you calculate the interquartile range (IQR)?

Back

The interquartile range (IQR) is calculated by subtracting Q1 from Q3 (IQR = Q3 - Q1).

Front

What is the purpose of a Box and Whisker Plot?

Back

The purpose of a Box and Whisker Plot is to visually summarize the distribution of a data set and identify outliers.

Front

What is an outlier in a data set?

Back

An outlier is a data point that is significantly different from the other values in the data set.

Front

How do you find Q1 in a data set?

Back

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

Front

How do you find Q3 in a data set?

Back

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