State whether each of the following will increase, decrease, or have no effect on the population variance.
(a) the sum of squares (SS) increases
This change will increase the population variance.
This change will decrease the population variance.
This change will have no effect on the population variance.
(b) the sample size decreases
This change will increase the population variance.
This change will decrease the population variance.
This change will have no effect on the population variance.
(c) the size of the population increases
This change will increase the population variance.
This change will decrease the population variance.
This change will have no effect on the population variance.