Help 3
The mean is 49.1
The standard deviation is 27.8
So.....one SD from the mean is from
49.1 - 27.8 to 49.1 + 27.8 =
21.3 to 76.9
6 scores fall into the range = 6/10 = 60%
This is lower than expected (we expect 68% to fall witin the range )
