Question

the sum of 15 observations of a data is 420 find the mean

Answer 1

heya

mean =sum of all observation/no of observation

now,.mean =420/15

mean=28 Ans .

hope it help you

@,rajukumar.

Answer 2

The required mean = 28

Given :

The sum of 15 observations of a data is 420

To find :

The mean

Solution :

Step 1 of 2 :

Write down the given data

Here it is given that sum of 15 observations of a data is 420

Number of observations = 15

Sum of the observations = 420

Step 2 of 2 :

Find the mean

The required mean

$\displaystyle \sf{ = \frac{Sum \: of \: the \: observations}{Number \: of \: observations} }$

$\displaystyle \sf{ = \frac{420}{15} }$

$\displaystyle \sf{ = 28}$

━━━━━━━━━━━━━━━━

Learn more from Brainly :-

$1.$ If the sum of twelve marks is 510, what is their average?

https://brainly.in/question/38904597

2. The mean of 5 numbers is 39. If one number is excluded, their mean is 35, find the excluded number

https://brainly.in/question/33419522