Box Plot Analysis and Interpretation

The video tutorial explains how to determine which box plot has a greater middle 50% range, also known as the interquartile range (IQR). It describes the IQR as the range between the first and third quartiles. The tutorial analyzes two box plots, detailing their quartile values and calculating the IQR for each. Box plot A has a first quartile value of 75 and a third quartile value of 89, resulting in an IQR of 14. Box plot B has a first quartile value of 78 and a third quartile value of 91, resulting in an IQR of 13. Therefore, box plot A has the greater middle 50% range.

What is another name for the middle 50% range in a box plot?

• Standard Deviation

• Interquartile Range

• Mean Absolute Deviation

• Variance

In the first box plot, what is the value of the first quartile?

• 91

• 75

• 89

• 78

What is the interquartile range of the first box plot?

• 14

• 16

• 10

• 12

In the second box plot, what is the value of the third quartile?

• 75

• 89

• 78

• 91

Which box plot has a greater interquartile range?

• Box Plot B

• Box Plot A

• Both have the same range

• Cannot be determined