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0 votes
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in Statistics by (25 points)
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The following are the marks of 150 students in an examination.calculate karl pearson's coefficient of skewness 

Marks

No. of Students

0-10

20

10-20

10

20-30

40

30-40

0

40-50

15

50-60

20

60-70

15

70-80

10

80-90

30

by (25 points)
please solve this question in step by step  it's urgent for me please

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