Question

Consider the following stem-and-leaf display for grades of 36 students in a statistics class:: 5 |...

Consider the following stem-and-leaf display for grades of 36 students in a statistics class:: 5 | 8 6| 0 2 6 8 7 | 2 2 2 4 5 5 8 9 9 8 | 1 1 2 5 5 6 6 6 8 9 9 | 1 2 3 4 5 5 6 8 8 9 9 9 In a pie chart, how many degrees are in the pie slice for the class "91-100"

Homework Answers

Answer #1

the stem-and-leaf display for grades of 36 students in a statistics class:

5 | 8

6| 0 2 6 8

7 | 2 2 2 4 5 5 8 9 9

8 | 1 1 2 5 5 6 6 6 8 9

9 | 1 2 3 4 5 5 6 8 8 9 9 9

The frequency distribution table with computions required for pie chart is , then ,given by :-

Class Frequency

Relative frequency

(frequency/total)

Angle to be used (degrees)

(Relative frequency)*360

51-60 2 0.056 20.16
61-70 3 0.083 29.88
71-80 9 0.250 90.00
81-90 10 0.278 100.08
91-100 12 0.333 119.88
Total 36 1.000 360.00

So the answer is :- 119.88 degrees are in the pie slice for class 91-100 .

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