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Complete Multiple Regression Analysis

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Review question 5

Soil and sediment adsorption, the extent to which chemicals collect in a condensed form on the surface, is an important characteristic influencing the effectiveness of pesticides and various agricultural chemicals. The following table contains data relating: y = phosphate adsorption index, x1 = extractable iron, and x2 = extractable aluminum.

Adsorption Data

Adsorption Index Extractable Iron Extractable Aluminum

4 61 13
18 175 21
14 111 24
18 124 23
26 130 64
26 173 38
21 169 33
30 169 61
28 160 39
36 244 71
65 257 112
62 333 88
40 199 54

The following model is proposed:

Y = 0 + 1x1 + 2x2 + 

Carry out a complete multiple regression analysis of this model.

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