Question

find the number of observations if the mean of the data is 15 and the sum of observations is 225​

Answer 1

Answer:

225/15=15

so the no of observation are 15

Answer 2

Answer:

No. of observations = 15

Step-by-step explanation:

Mean = Sum of observations / No. of observations

Let no. of observations =n

=> 15 = 225/n

=> n = 225/15

=> n = 15

No. of observations = 15