Question

the mean of 8 observations is 12 . what is the mean of new observations obtained by adding 1 to each of the observation? ​

Answer 1

Step-by-step explanation:

Let the 8 observations are x1, x2, x3, x4, x5, x6, x7, x8

∴ x1 + x2 + x3 + x4 + x5 + x6 + x7 + x8 = 40 × 8 = 320

New mean = 320 + 5 × 8 = 360 / 8 = 45

Answer 2

Answer:

ans is 13 pls check it correctly