A country’s fertility rate can have a major long term impact on its economic health. Low fertility rates eventually cause the average age of the population to skew higher, making it more difficult to fund programs such as social security. The following data represent a sample showing the number of children from 10 families.

1 5 3 1 2 2 1 4 0 1

a. Calculate the range.

b. Calculate the variance.

c. Calculate the standard deviation.