R-Squared Difference when Dependent variable is $/lb vs Total Dollars? 1. Apr 9, 2012 stats1322 Why would I see a fairly significant difference in r-square (98.5% vs 85%) when I change my dependent variable from Total$'s to $'s per lb? My independent variable in both cases is weight. Each equation yields essentially the same answer in all tests of weight (within .08%). How do I know which one best represents my data? It makes a difference when talking to management if something explains all but 1.5% of the variation in price, vs 15%. 2. Apr 9, 2012 stats1322 Example of the difference... A part that weighs 2 pounds: Total dollars equation estimates$72.645
$/lb equation estimates$36.33/lb (36.33*2 = \$72.66)

This is how it looks for all the different parts.

Last edited: Apr 9, 2012