Question

Mean of 12 numbers is 20. If each number is multiplied by 6, then the new mean is ………​

Answer 1

Answer:

mean of 12 numbers is 20

ie, mean=sum of observation by number of observation

let the sum of observations be x

so, 20= x by 12

so 20x12 =x

x=240

new mean will be 240 x 6,

1440 by 12

so new mean 120

i think so not sure..