This data talks about a solution of a chemical after sitting for a certain amount of...

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Basic Math

This data talks about a solution of a chemical after sitting fora certain amount of time and provides the time it was leftsitting.
Concentration of a chemical solution (y) Time after solution was made (x)
0.07 9
0.09 9
0.08 9
0.16 7
0.17 7
0.21 7
0.49 5
0.58 5
0.53 5
1.22 3
1.15 3
1.07 3
2.84 1
2.57 1
3.1 1
Run regression analysis on this. Make sure to output theresiduals and residual plots.
Plot the predicted values versus the residual values in ascatter plot.
What assumption is violated in this data?
What solution can be applied here to fix the issues? Try yoursolution and see if it fixes the problems with your residuals.

Answer & Explanation Solved by verified expert

4.3 Ratings (699 Votes)

aRegression Analysis y versus xThe regression equation isy 258 0324 xPredictor Coef SE Coef T PConstant 25753 02487 1035 0000x 032400 004330 748 0000S 0474314 RSq 812 RSqadj 797Analysis of VarianceSource DF SS MS F PRegression 1 12597 12597 5599 0000Residual Error 13 2925 0225Total 14 15522by x See Answer

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Concentration of a chemical solution (y)	Time after solution was made (x)
0.07	9
0.09	9
0.08	9
0.16	7
0.17	7
0.21	7
0.49	5
0.58	5
0.53	5
1.22	3
1.15	3
1.07	3
2.84	1
2.57	1
3.1	1