Allie and Annika decided to keep track of the number of books they read during the year. The table shows the total number of books read for five months.
Number of Books Read
Reader Jan. Feb. March April May
Allie 7 3 12 5 8
Annika 4 2 9 7 5
(a) Create a box-and-whisker plot with a single number line to compare the two data sets. Use the minimum and maximum values of the data points to choose an appropriate scale for the number line.
(b) Which girl’s data set has the lesser median?
(c) How did you determine the value in the first quartile (Q1 value) for Allie?
(d) In which quarter of Annika’s data are the values most spread out? Explain.
(e) Compare the interquartile range (IQR) for both data sets. Show your work.