Question

If the mean of 10 observation is 12,what is their sum?

Answer 1

Step-by-step explanation:

sum of 12 observation = 12 x10 = 120

10 is added to each total addition = 10 x 10 = 100

new mean = total / no. of observation = (120 + 100 ) / 100 = 22

Answer 2

I hope you find it easy