Question

Arithmetic mean of 10 numbers is 7.5 find the sum

Answer 1

Answer:

15

Step-by-step explanation:

Mean is find out by adding the number and then dividing by two hence the answer will be 7.5 ×2 = 15

Answer 2

Answer:

75

Step-by-step explanation:

mean= sum of observations /no .of observations

7.5=x/10

x=75

sum of observations =75

I hope this helps u