Question

mr. richardson gave his students a biology test last week. here are the test scores for each of the twelve 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 5.) test score 93 83 87 81 81 90 90 88 93 97 82 86 test score frequency 79 to 83 84 to 88 89 to 93 94 to 98

Explanation:

Step1: Count scores in 79 - 83

Scores 83, 81, 81, 82 are in this range. So frequency = 4.

Step2: Count scores in 84 - 88

Scores 87, 88, 86 are in this range. So frequency = 3.

Step3: Count scores in 89 - 93

Scores 93, 90, 90, 93 are in this range. So frequency = 4.

Step4: Count scores in 94 - 98

Score 97 is in this range. So frequency = 1.

Answer:

Test score	Frequency
84 to 88	3
89 to 93	4
94 to 98	1