Question

If the mean of 3 observation is 10, then the

sum of the observation is_____.​

Answer 1

Answer:

The answer is 30

Step-by-step explanation:

first of all we all know that mean is equal to sum of observation divide by no. of observation

then according to our question

here we have mean= 10,No of observation= 3

Now, Mean = sum of observation ÷ no of observation

10 = sum of observation÷ 3

sum of observation= 10 ×3

sum of observation = 30