of 30-55 Hours No. 55-80 80-105 105-130 130-155 155-180 180-205 worked per month of 4 workers No. 4 7 10 12 11 7 Calculate quartile deviation and coefficient of quartile deviation. Comment your answer. 7.) Consider the table from question no. (6). Using above data determine variance and standard deviation of the frequeney distribution.

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Anser the red circle question no. 7

6. The following frequency distribution refers to the number of hours worked per month of
55 workers of factory:
No.
of 30-55
55-80
80-105
105-130
130-155 155-180 180-205
Hours
worked
per
month
No.
of 4
4
7
10
12
11
7
workers
Calculate quartile deviation and coefficient of quartile deviation. Comment your answer.
7.) Consider the table from question no. (6). Using above data determine variance and standard
deviation of the frequency distribution.
Transcribed Image Text:6. The following frequency distribution refers to the number of hours worked per month of 55 workers of factory: No. of 30-55 55-80 80-105 105-130 130-155 155-180 180-205 Hours worked per month No. of 4 4 7 10 12 11 7 workers Calculate quartile deviation and coefficient of quartile deviation. Comment your answer. 7.) Consider the table from question no. (6). Using above data determine variance and standard deviation of the frequency distribution.
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