Question

Mrs. Barnes recorded the grades her students earned on the last chapter test in the frequency table below.The frequency table will be used to make a histogram.

Test Score
Number of Students
31 - 40
1
41 - 50
2
51 - 60
4
61 - 70
6
71 - 80
11
81 - 90
5
91 - 100
4

Which chart has the correct setup for Mrs. Barnes’ histogram?
A 2-column table with 4 rows titled Mrs. Barnes's Histogram. Column 1 has entries interval used, appropriate scale, vertical axis represents, horizontal axis represents. Column 2 has entries 10, 31 to 100, number of students, test scores.
A 2-column table with 4 rows titled Mrs. Barnes's Histogram. Column 1 has entries interval used, appropriate scale, vertical axis represents, horizontal axis represents. Column 2 has entries 10, 0 to 12, number of students, test scores.
A 2-column table with 4 rows titled Mrs. Barnes's Histogram. Column 1 has entries interval used, appropriate scale, vertical axis represents, horizontal axis represents. Column 2 has entries 7, 0 to 12, test scores, number of students.
A 2-column table with 4 rows titled Mrs. Barnes's Histogram. Column 1 has entries interval used, appropriate scale, vertical axis represents, horizontal axis represents. Column 2 has entries 7, 31 to 100, test scores, number of students.

Answer 1

B

Reason: Each class width is 10 (31–40, 41–50, …), the vertical axis should show frequency (number of students) and needs to go at least to 11 so 0–12 is a good scale, and the horizontal axis is test scores.