(a) Complete the grouped frequency distribution for the data. (Note that the class width is 4.) (b) Construct a histogram for the data.

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Mr. Walker gave his students a biology test last week.
Here are the test scores for each of the sixteen students.
Test scores
77 78 91 81 89
87
90
79
89
82
73 81 85
(a) Complete the grouped frequency distribution for
the data. (Note that the class width is 4.)
Test scores
71.5-75.5
75.5-79.5
79.5-83.5
83.5-87.5
73 86 84
87.5-91.5
Frequency
0
0
S
(b) Construct a histogram for the data.
Frequency
4+
3
2+
1
71.5
75.5
79.5
Test scores
83.5
X
87.5
91.5
Transcribed Image Text:Mr. Walker gave his students a biology test last week. Here are the test scores for each of the sixteen students. Test scores 77 78 91 81 89 87 90 79 89 82 73 81 85 (a) Complete the grouped frequency distribution for the data. (Note that the class width is 4.) Test scores 71.5-75.5 75.5-79.5 79.5-83.5 83.5-87.5 73 86 84 87.5-91.5 Frequency 0 0 S (b) Construct a histogram for the data. Frequency 4+ 3 2+ 1 71.5 75.5 79.5 Test scores 83.5 X 87.5 91.5
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