Question

if someone has 21 numbers that range from 100-121 what is the mean ??

Answer 1

mean is the average, so add the numbers and divide by their count i.e. 22

Answer 2

( 100+101+102+...+121 ) / 22

Answer 3

[ (20 * 100) + (1+2+3+4+...+21) ] / 22

Answer 4

110.5

Answer 5

my above bad should say
[ (22 * 100) + (1+2+3+4+...+21) ] / 22