Question

if the sum and mean of a data are 407 and 11 respectively then the number of observation in the data or​

Answer 1

Answer:

37

Step-by-step explanation:

Given :-

Sum of the observations is 407.

Mean is 11.

To find :-

The number of observations.

Solution :-

We know,

$Mean=\frac{Sum\ of\ the\ observations}{total\ number\ of\ observations}$                     ...(i)

Putting the given data in (i):

$11=\frac{407}{Total\ number\ of\ observations}$

$or\ Total\ number\ of\ observations=\frac{407}{11} \\\\or\ Total\ number\ of\ observations=37$

Thus, the number of observations is 37.