2. Go to Odesi and look at the 1988-1990 Labour Market Activity Survey - Longitudinal Person File (it is a labour survey), and download a subsample, keeping only variables below: ANNUAL EARN ALL PAID JOBS 1988 INCOME ANNUAL EARN ALL PAID JOBS 1989 INCOME ANNUAL EARN ALL PAID JOBS 1990 INCOME ANNUAL EARN ALL PAID JOBS 1988-1990 INCOME AGEGRP88 AGE GROUPS ORIGIN COUNTRY OF BIRTH CANADA OUTSIDE a. If it wasn't in description/title, how could you tell that the LMAS is longitudinal? b. Why is country of birth only asked once (and not for all three years)? c. Does it make sense to ask for age groups/response only once in the sample? d. Generate a histogram, showing the percent of the sample in each age category, for agegrp88