We will use the columns "class year" and "average gift" for all questions, unless otherwise stated.
a. What do you think the scatter plot will look like? Make a scatter plot of the data.
b. Calculate the least squares line. Put the equation in the form of: y= a + bx
c. Find the correlation coefficient. What does it imply about the significance of the relationship?
d. For the class of 1930, predict the average class gift.
e. For the class of 1964, predict the average class gift.
f. For the class of 2010, predict the average class gift. Why doesn't this value make any sense?