Question

your answer is incorrect.

• 66 to 71: your answer is incorrect.
• 72 to 77: your answer is incorrect.
• 78 to 83: your answer is incorrect.
• 84 to 89: your answer is incorrect.

ms. johnson gave her 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.)
your answer
test score
88 84 69 68
87 72 80 88
77 69 84
test score frequency
66 to 71
72 to 77
78 to 83
84 to 89

Explanation:

Step1: Analyze 66 - 71 scores

Identify scores in 66–71: 69, 68, 69. Count: 3.

Step2: Analyze 72 - 77 scores

Identify scores in 72–77: 72, 77. Count: 2.

Step3: Analyze 78 - 83 scores

Identify scores in 78–83: 80. Count: 1.

Step4: Analyze 84 - 89 scores

Identify scores in 84–89: 84, 88, 87, 88, 84. Count: 5.

Answer:

Test score	Frequency
72 to 77	2
78 to 83	1
84 to 89	5