Refer back to the previous two exercises that explore the association between children’s heights and (biological) parents’ heights. Recall that the data file DadandChildHeights contains data for students in a statistics class on the following two variables: student’s height (inches) and biological father’s height (inches), whereas the data file MomandChildHeights contains data for students in a statistics class on the following two variables: student’s height (inches) and biological mother’s height (inches).
a. Report the value of the correlation coefficient for children’s and fathers’ heights.
b. Report the value of the correlation coefficient for children’s and mothers’ heights.
c. In which case does there appear to be a stronger association between child’s and parent’s heights: with father’s height or with mother’s height? Explain your reasoning.

Data from previous exercise

In 1885, Sir Francis Galton first used regression to explore the association between children’s heights and (biological) parents’ heights. The data file MomandChildHeights contains data for students in a statistics class on the following two variables: student’s height (inches) and biological mother’s height (inches). Enter the data into the Corr/ Regression applet.