The first model included just thetimeattribute. The model code in R was lm(Performance~ time). The R-square for this model was 37.58%.

The second model included just thecolorattribute. The model code in R was lm(Performance~ color). The R-square for this model was 1.31%.

The third model included both thetimeandcolorattributes. The model code in R was lm(Performance~ color + time). The R-square for this model was 38.89%.

Rank the three models by how much variance they explain in math scores (ie, math performance)?

Most variance explained

[ Choose ] The third model (color and time) The first model (time only) The second model (color only)

Middle variance explained

[ Choose ] The third model (color and time) The first model (time only) The second model (color only)

Least variance explained

[ Choose ] The third model (color and time) The first model (time only) The second model (color only)