The first four moments Of a distribution about the value 4 of the variable are —l .5, 17, —30 and 108. Find the moments about mean, and Find also the moments about

(i) the origin, and

(ii) the point x 2.

When studying the relationship between two variables with 11 observations each, it was found that   On verification one value of x(=7) and one value of y(=9) were found inaccurate and hence were removed from data. Find that how much the original value of r be affected?

The first four moments of a distribution about the value 4 of the variable are –1.5, 17, –30 and 108. Find the moments about mean, 

Find also the moments about (i) the origin, and (ii) the point x = 2.

A market investigator returns the following data: Of 1000 people consulted, 811 liked chocolates, 752 liked toffee and 418 liked boiled sweets, 570 liked chocolates and toffee, 356 liked chocolates and boiled sweets and 348 liked toffee and boiled sweets, 297 liked all three. Show that this information as it stands must be incorrect.

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