An experiment to evaluate the effects of certain variables on soil erosion was performed on 10 foot square plots of sloped farmland subjected to 2 inches of artificial rain applied over a 20 minute period The data and related ANOVA table are as follows a Compute R2, and comment on the fit of the model b The fitted model involving all three independent variables is given by Aring para 1 879 77 326X1 1 559X2 23 904X3 Compute and compare observed and predicted values of Y for plots 1, 5, and 7 Plot 8 10 SL(Y) SG( ) LOBS (X) 27 1 35 6 1 4 378 402 39 855 5 43 6 52 1 43 8 5 0 43 0 47 0 44 0 48 0 48 0 49 0 53 5 055 05 0 48 1 95 5 13 398 6 25 7 12 6 50 10 67 7 08 9 88 87 496 0 34 0 32 0 29 0 30 0 25 0 26 0 10 016 0 19 018 0 28 Source d f Regression Residual 680 4912 16 0942 7 Total 10 696 5855

Question: An experiment to evaluate the effects of certain variables on soil erosion was performed on 10-foot-square plots of sloped farmland subjected to 2 inches of

An experiment to evaluate the effects of certain variables on soil erosion was performed on 10-foot-square plots of sloped farmland subjected to 2 inches of artificial rain applied over a 20-minute period. The data and related ANOVA table are as follows:

a. Compute R2, and comment on the fit of the model.
b. The fitted model involving all three independent variables is given by Å¶ = -1.879 + 77.326X1 + 1.559X2 - 23.904X3. Compute and compare observed and predicted values of Y for plots 1, 5, and 7.

Plot 8 10 SL(Y) SG(%) LOBS (X) 27.1 35.6 1.4 378 402 39.855.5 43.6 52.1 43.8 5 0.43 0.47 0.44 0.48 0.48 0.49 0.53 5 055 05 0.48 1.95 5.13 398 6.25 7.12 6.50 10.67 7.08 9.88 87 496 0.34 0.32 0.29 0.30 0.25 0.26 0.10 016 0.19 018 0.28 Source d.f Regression Residual 680.4912 16.0942 7 Total 10 696.5855

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