A line of men’s shirts was offered in a chain of retail stores at three prices: 32, 35, and 40. Weekly sales were monitored, producing totals at 30 stores in the chain (10 at each price). Which...

A line of men’s shirts was offered in a chain of retail stores at three prices:
32,
35, and
40. Weekly sales were monitored, producing totals at 30 stores in the chain (10 at each price). Which produces a higher
: a linear regression of sales on price or an analysis of variance of sales grouped by price (treating price as categorical)?