Question

2g. If the sum of all the observations is 1728
and Am of observations is 64 find number
of observation

Answer 1

$let \: number \: of \: observations \: = n \\ am \: = \frac{sum \: of \: observations }{no. \: of \: observations} \\ 64 = \frac{1728}{n} \\ n = \frac{1728}{64} \\ n \: = 27$

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