Problem
Customers who made online purchases from an Internet retailer were randomly sampled from the retailer's database. The dollar value of each customer's purchases along with the time the customer spent shopping the company's online catalog were recorded. The sample results are contained in the file Catalog.
I. Create a scatter plot of the variables Time (x) and Purchases (y). What relationship, if any, appears to exist between the two variables?
II. Compute the correlation coefficient for these sample data.
III. What inferences can you make about the relationship between time spent on the company's online catalog and the dollars spent shopping at the company's site?