Question

if the mean of a data is 316 and the sum of its observation is 3792 find the number of observations in the data.​

Answer 1

12

Explanation:

mean is calculated as

mean =
`(sum)/(count)`

Here mean = 316 and sum = 3792 , count n is required to be found, so

`(3792)/(n)` = 316 ( multiply both sides by n )

3792 = 316n ( divide both sides by 316 )

12 = n

There are 12 observations in the data