SOLUTION: The computer-science aptitude score, x, and the achievement score, y (measured by a comprehensive final), were measured for 10 students in a beginning computer-science course. The

Question 862217: The computer-science aptitude score, x, and the achievement score, y (measured by a comprehensive final), were measured for 10 students in a beginning computer-science course. The results were as follows. (Give your answers correct to two decimal places.)
x = 5 17 11 20 9 19 9 17 20 15
y = 33 32 32 32 23 19 24 15 27 25

I have the line of equation as
y (hat)=29.833 + 0.30x (however the .30 is incorrect)

Find se2
Answer by ewatrrr(24785) (Show Source): You can put this solution on YOUR website!



Hi

using Excel scatter Plot features after entering columns for x and y in a spreadsheet:

y = -0.2559x  + 29.833

 the standard error of the predicted y-value for each x in the regression = 6.3725 (Standard Error of the Estimate) 

se2, 

(excel function STEYX)

     

x 	y	y'	y-y'	(y-y')^2

5	33	28.5535	4.4465	19.77

17	32	25.4827	6.5173	42.48

11	32	27.0181	4.9819	24.82

20	32	24.715	7.285	53.07

9	23	27.5299	-4.5299	20.52

19	19	24.9709	-5.9709	35.65

9	24	27.5299	-3.5299	12.46

17	15	25.4827	-10.4827109.89

20	27	24.715	2.285	5.22

15	25	25.9945	-0.9945	0.99

				324.87

				6.37249951  Standard Error of the Estimate

 

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