一道习题：

a regression of average weekly earnings(AWE,measured in dollars) on age (measured in years) using a random sample of college-educated full-time workers aged 25-65 yields the following:

AWE=696.7+9.6Age,  R2=0.023,  SER=624.1

(A)

…

(G) given what you know about the distribution of earnings, do you think it is plausible that the distribution of errors inthe regression is normal?(Hint: do you think that the distribution is aymmetric or skewed? What is the smallest value of earnings and is it consistent with a normal distribution?)

…