The box plots show the scores on a statistics quiz for two different classes. Based on the box plots, which of the following statements must be true?
The first quartile of scores for Class R is less than the first quartile for Class S.
The mean score for Class R is greater than the mean score for Class S.
The median score for Class R is greater than the median score for Class S.
The interquartile range for Class R is less than the interquartile range for Class S.
