Question

ten employees took a cpr test. the results are displayed below in a histogram
cpr test
score
which of the following data sets could represent the scores shown in the histogram?
a. 53, 61, 68, 69, 71, 74, 75, 75, 77, 78, 78, 78, 83, 84, 87, 88, 91, 91, 93
b. 53, 60, 68, 69, 70, 71, 74, 75, 75, 77, 78, 78, 80, 81, 85, 86, 88, 91, 91
c. 57, 62, 63, 65, 66, 71, 72, 73, 77, 79, 79, 81, 81, 83, 85, 89, 91, 94

Explanation:

Step1: Count frequencies per range from histogram

Frequency in 51 - 60: 1
Frequency in 61 - 70: 3
Frequency in 71 - 80: 6
Frequency in 81 - 90: 4
Frequency in 91 - 100: 1

Step2: Count frequencies per range for each option

For option A:
Frequency in 51 - 60: 1
Frequency in 61 - 70: 3
Frequency in 71 - 80: 9
Frequency in 81 - 90: 4
Frequency in 91 - 100: 3
For option B:
Frequency in 51 - 60: 1
Frequency in 61 - 70: 4
Frequency in 71 - 80: 8
Frequency in 81 - 90: 4
Frequency in 91 - 100: 2
For option C:
Frequency in 51 - 60: 1
Frequency in 61 - 70: 5
Frequency in 71 - 80: 5
Frequency in 81 - 90: 5
Frequency in 91 - 100: 2

Step3: Match with histogram frequencies

Option C has frequencies that match the histogram frequencies best.

Answer:

C. 57, 62, 63, 65, 66, 71, 72, 73, 77, 79, 79, 81, 81, 83, 85, 89, 91, 94