Question

Mean of 9 numbers is 14. One number 12 was excluded. Find the new mean

Answer 1

Answer:

Step-by-step explanation:

formula , Average = sum of observation  / number of observation

given,

   Average of 9 numbers = 14

  Total number = 9

On the basis of the formula given above : -

14 = ( sum of 9 number ) / 9

14 x 9 = sum of 9 numbers

126 = sum of 9 numbers

Now, one number 12 is excluded,

sum of 8 numbers = sum of 9 numbers - 12

sum of 8 numbers = 126 - 12

sum of 8 number = 114

Total numbers = 8

Therefore,

New average = 114 / 8

New average = 14.25

i hope my answer will help you .... good luck

Answer 2

Answer:

14.25

Hope it helps