Older Adults (average age 72) Younger Adults (average age 31)
9, 4, 7, 3, 8 7, 9, 6, 7, 8
6, 2, 8, 4, 5, 6, 7, 6, 6, 8
7, 5, 2, 6, 6 9, 7, 8, 6, 9
Compute the following values for each group by hand. Use the formula for standard deviation displayed in assignments. Please show calculations by hand or points will be deducted.
Older Younger
N = N =
X =
X =
Population mean
= Population mean
=
X^2 =
X^2 =
SS = SS =
Population variance
^2 = Population variance
^2 =
Standard deviation
= Standard deviation
=