Question

EXERC
1. Find the mean of 8, 12, 16, 22, 10 and 4.
Find the resulting mean, if each of the
observations, given above, be :
(i) multiplied by 3.
(ii) divided by 2.
(iii) multiplied by 3 and then divided by 2.
(iv) increased by 25%.
(v) decreased by 40%.​

Answer 1

Answer:

8+12+16+22+10+4/6

72/6 = 12

(I) 12 x 3 = 36

(ii) 12/2 = 6

(iii) 12 x 3/2 = 18

(iv) 25/100 x 12 =3

12 + 3=15

(v) 40/100x12= 4.8

12-4.8=7.2