Class A, meaning Class A has more variability in the middle 50% of scores

Class B, meaning Class B has more variability in the middle 50% of scores

IQR cannot be determined from a box plot

Both have the same IQR, meaning their variability is identical

72

79

90

69

Yes, in Class B

Yes, in both Class A and B

Yes, in Class A

No

Class A

Cannot be determined

Class B

Both have the same median

Multiplying all data points by a constant greater than 1

Adding an extreme outlier

Increasing the number of data points while keeping the spread the same

Removing all negative values

The median is closer to the lower quartile, and the upper whisker is longer

The distribution is symmetric

The median is exactly in the center of the box

The mean and median are equal

The IQR is affected by extreme values and outliers

The IQR measures the spread of the middle 50% of the data

The IQR is always larger than the range

The IQR is always equal to the difference between the minimum and maximum values

They indicate the range of all data points

They represent the mean and standard deviation of the data

They show the minimum and maximum values within 1.5 times the interquartile range (IQR) from the quartiles

They always extend to the absolute minimum and maximum values

The interquartile range (IQR)

The standard deviation

The mean of the data

The range of the data