Question

10) In a data set 10 observations are there and the arithmetic mean of such

observations is 20. If the value of all observations increased by 10 what should be

the new arithmetic mean?​

Answer 1

Answer:

25

Explanation:

Sum of 10 observations is S = 20 x 10 = 200 If each observation is added by 5 Then sum of observations is added by 5 × 10 = 50

S = 200 + 50 = 250

Mean of new observation is S/10 =250/10 = = 25