The working table show the monthly expenditure of 80 students of a university on morning breakfast: Expenditure (in $.) No. of Students Expenditure in $ 2 530-570 No. of Students 780-820 13 6 480-520 7 430-470 12 380-420 18 330-370 730-770 580-720 7 530-670 4 580-620 2 Calculate Arithmetic mean, standard deviation and coefficient of variation of the above data.

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The working table show the monthly expenditure of 80 students of a university on morning breakfast:
Expenditure (in $.) No. of Students
No. of Students
Expenditure in $
2 530-570
780-820
13
730-770
6 480-520
580-720
7 430-470
7
12 380-420
18 330-370
530-670
4
580-620
2
Calculate Arithmetic mean, standard deviation and coefficient of variation of the above data.
Transcribed Image Text:The working table show the monthly expenditure of 80 students of a university on morning breakfast: Expenditure (in $.) No. of Students No. of Students Expenditure in $ 2 530-570 780-820 13 730-770 6 480-520 580-720 7 430-470 7 12 380-420 18 330-370 530-670 4 580-620 2 Calculate Arithmetic mean, standard deviation and coefficient of variation of the above data.
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