For each of the following studies, suggest an appropriate statistical summary (that is a statistic and a graph) to fully describe the data. No explanation is needed. a) A mortgage broker believes that the amount of money that people borrow to purchase a home is related to the interest rate that is offered. For a sample of 50 months drawn from over the past 30 years, the total amount of mortgage loans offered by Canadian financial institutions and the mortgage interest rate offered each month are taken to investigate. [2 marks] b) A Canadian start-up company is building a database of its clients. It recorded the amount of service (in $) the client had purchased with the company for the 64 new clients it acquired last month. [2 marks] c) The owner of an optometry store determined the eye condition (far sighted, near sighted, needs bifocals) and occupation (blue collar, white collar, other) of each of 60 customers who needed corrective glasses for further investigation. [2 marks]