Question

For the scores in the following frequency distribution table, the mean is M = 3. True or False?

X f
4 1
3 4
2 2

Answer 1

false

mean =efx/ef

=(4x1)+(4x3)+(2x2)/1+4+2

=4+12+4/7

=20/7

Answer 2

False, the mean is 2 6/7

Explanation:

`((4x1)+(3x4) +(2x2))/(7)` There are a total of 7 numbers

`(4 + 12+ 4)/(7)`

`(20)/(7)` = 2 6/7