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Question
A frequency polygon is constructed by plotting frequency of the class interval and the
Options
upper limit of the class
lower limit of the class
mid value of the class
any values of the class
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Solution
mid value of the class
Frequency polygon is the plot of frequencies vs. the mid values of the classes.
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Read the bar graph shown in Fig. 23.10 and answer the following questions
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|
C.I |
10 - 30 |
30 - 50 |
50 - 70 | 70 - 90 | 90 - 110 | 110 - 130 | 130 - 150 |
| ƒ | 4 | 7 | 5 | 9 | 5 | 6 | 4 |
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| 50 – 54 | 12 |
