Question

mr. lee gave his students a biology test last week. here are the test scores for each of the eleven students. complete the grouped frequency distribution for the data. in the distribution, the frequency of a class is the number of test scores in that class. (note that we are using a class width of 6.) test score 66 67 83 76 67 71 85 78 72 80 87 test score frequency 66 to 71 72 to 77 78 to 83 84 to 89

Explanation:

Step1: Count scores in 66 - 71

The scores in the range 66 - 71 are 66, 67, 67, 71. So the frequency is 4.

Step2: Count scores in 72 - 77

The scores in the range 72 - 77 are 72, 76. So the frequency is 2.

Step3: Count scores in 78 - 83

The scores in the range 78 - 83 are 78, 80, 83. So the frequency is 3.

Step4: Count scores in 84 - 89

The scores in the range 84 - 89 are 85, 87. So the frequency is 2.

Answer:

Test score	Frequency
72 to 77	2
78 to 83	3
84 to 89	2