Describe the relationship between the cost of operations and the number of cattle sold at auctions.
Problem

A group of livestock auction market managers were interested in learning how the number of cattle sold at their markets influenced the cost of operations of their markets. Data was collected from 19 such auction markets.

Find the simple linear regression equation for cost of operations on cattle sold. Use this equation to predict the cost of operations for a market that anticipates selling 13,500 cattle.
Sample Data

The Market data set contains data from 19 livestock auction markets, including the number of head of cattle sold (in thousands), the cost of operations of the auction market (in thousands of dollars), and the market identifier.