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