The frequency distributions shown indicate the percentages of public school students in fourth-grade reading and mathematics who performed at or above the required proficiency levels for the 50 states in the United States. Draw histograms for each, and decide if there is any difference in the performance of the students in the subjects.
Reading Math
Class frequency frequency
17.5–22.5 .....7....... 5
22.5–27.5..... 6 .......9
27.5–32.5.... 14......11
32.5–37.5.... 19..... 16
37.5–42.5...... 3 .......8
42.5–47.5 ......1 .......1