b In this part we are asked to describe the distribution of the data set. In a box-and-whisker plot, each whisker represents 25 % of the data. The box represents 50 % of the data. With this in mind, we can state the following facts about the distribution of the data.
c The interquartile range (IQR) is given by the difference of the third quartile, Q_3, and the first quartile, Q_1. In a box-and-whisker plot, the left point of the right whisker represents Q_3, which is 14.75. The right point of the left whisker represents Q_1, which is 10.50. Let's calculate the difference of these values to find IQR.
d To find if the data is more spread out below Q_1 or above Q_3, let's look at the whiskers to see which one is longer. Since the right whisker is longer, the data above Q_3 is more spread out than the data below Q_1.
