Question

Arithmetic mean is 25 and all sum of observations is 350 then number of observations are

Answer 1

The number of observations is 14

Step-by-step explanation:

Given:

mean=25

the sum of all observations= 350

To find:

number of observations

Solution:

The formula for mean

Mean = sum of all observations  

            number of observations

Putting all the values

25= 350/number of observations

number of observations= 350/25

∴ number of observations=  14

Thus, there are 14 observations for the data set.

#SPJ3

Answer 2

Answer:

Number of observations are 14

Step-by-step explanation:

As per the data given in the question,

We have,

Arithmetic mean given is = 25

Sum of all observations = 350

As we know that:

Arithmetic mean = $\frac{sum\: of \:observations}{number\: of \:observations}$

$no. \:of \:observation= \frac{sum\: of\: observations}{Arithmetic\: mean} \\=\frac{350}{25} \\=14$

Hence, number of observations are 14

#SPJ2