1. [T points] A PhD. student from a School of Population and Public Health conducted a study on the Rial: of Heart Disease. In particular, she studied the association bawwn the frequency of eating out and the risk of heart disease or stroke in Canada. She asked a selected group of heart patients who 1were admitted to a Grand hospital in 2019, to complete a questionnaire. Some of the questions asked were: i] Which one descan your age level? A. Under 45 years old B. 4554 years old C. 55-154 years old I1. I35 or older ii} How much did you spend on eating out last week [in dollars}? iii] What is your sex? A. Female 13. Male a} [1] Identify the population of interest. In} [1] Identify the units in this study. c} [3] What are the variables of interest in these questions and classii';r them as categorical or quantitative? d} [1] Number some appropriate graphical methods could be used for each variable in c