Question

If the mean of the data 12, 8, 6, 3, 9 is 7.6. If 5 is added to each observation then the new mean is

Answer 1

Answer:

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

Step-by-step explanation:

hope it helps you

Answer 2

hii. friend

here is your answer

data 12, 8, 6, 3, 9 =7•6

so. 12+8+6+3+9=7•6

==>20+6+3+9=7•6

==>26+3+9=7•6

==>29+9=7•6

==>38=7•6

==> 38

••••••=7•6

total. no. 5

==>7•6*5

==>380

new. mean. ==>380+5/5

==>385

....

5

==>77.

so. answer. ==>77. answer

hope it's helps you friend