Question: Find the first, the second and the third central moments of the frequency distribution of expenditure (Rs per month) given below: Find the first four

Find the first, the second and the third central moments of the frequency distribution of expenditure (Rs per month) given below:
Expenditure No. of Families 3-6 6-9 9-12 12-15 15-18 18-21 21-24 Total
Find the first four moments and the values of b1 and b2 from the following frequency distribution:

28 292 389 212 59 18 2 1000

Also, find the measures of skewness and kurtosis.

Expenditure No. of Families 3-6 6-9 9-12 12-15 15-18 18-21 21-24 Total 28 292 389 212 59 18 2 1000

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