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Chapter 2: Q. 2.116 (page 74)

Clocking the Cheetah. Construct a relative-frequency polygon for the speed data given in Exercise 2.89. Use the classes specified in that exercise.

Short Answer

Expert verified

Figure depicts the relative frequency polygon.

Step by step solution

01

Given Information 

Given in the question that, to refer exercise 2.89. We have to construct a relative-frequency polygon for the speed.

02

Explanation 

From the result of previous exercise,

classFrequencyRelative frequency
52-<54
2
0.057
54-<56
5
0.143
56-<58
6
0.171
58-<60
8
0.229
60-<62
7
0.2
62-<64
3
0.086
64-<66
2
0.057
66-<68
1
0.029
68-<70
0
0
70-<72
0
0
72-<74
0
0
74-<76
1
0.029
Total35
1
03

Explanation 

The midpoints are located in the middle of two lower limits:

53,55,57,59,61,63,65,67,69,71,73,75

As indicated below, add the above points to the graphs and connect them with a straight line.

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