Question

a recent statistics exam yielded the following 25 scores. construct a grouped frequency distribution table with the class limits shown below.
61 83 77 58 65
53 86 61 65 96
81 83 46 73 81
76 90 73 98 57
76 74 49 82 99
class limits frequency
41 - 49 answer 1
50 - 59 answer 2
60 - 69 answer 3
70 - 79 answer 4
80 - 89 answer 5
90 - 99 answer 6

Explanation:

Step1: Count scores in 41 - 49

The scores in the range 41 - 49 are 46, 49. So the frequency is 2.

Step2: Count scores in 50 - 59

The scores in the range 50 - 59 are 58, 53, 57. So the frequency is 3.

Step3: Count scores in 60 - 69

The scores in the range 60 - 69 are 61, 65, 61, 65. So the frequency is 4.

Step4: Count scores in 70 - 79

The scores in the range 70 - 79 are 77, 73, 76, 73, 76, 74. So the frequency is 6.

Step5: Count scores in 80 - 89

The scores in the range 80 - 89 are 83, 86, 81, 83, 81, 82. So the frequency is 6.

Step6: Count scores in 90 - 99

The scores in the range 90 - 99 are 96, 90, 98, 99. So the frequency is 4.

Answer:

1: 2