Question

the mean of 10 numbers is 1445. if 1500 is also added to this data what will be there new mean of 11 numbers

Answer 1

Let the sum of the 10 numbers be x, then
x/ 10 = 1445
x = 1445 x 10 = 14450

New mean = (14450 + 1500)/11 = 15950/11 = 1450