A teacher is interested in the relationship between the time spent studying for an exam and...

A teacher is interested in the relationship between the time spent studying for an exam and exam score. The table lists scores for 5 students. The value of b0 = 67.91 and the value of b1 = 0.75 Hours studied 5 18 3 15 17 Exam score 63 87 79 72 82 . Step 4 of 6 : Calculate the Coefficient of Determination (R2). Round answer to four decimal places.

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Expert Solution

We have to find the coefficient of determination R^2.

The regression equation is = b0 + b1*x

That is = 67.91 + 0.75*x

We have to find SSR.

= 76.6

x	y	yhat	(yhat-ybar)	(yhat-ybar)^2
5	63	71.66	-4.94	24.4036
18	87	81.41	4.81	23.1361
3	79	70.16	-6.44	41.4736
15	72	79.16	2.56	6.5536
17	82	80.66	4.06	16.4836
			Total	112.05

x	y	(y-ybar)	(y-ybar)^2
5	63	-13.6	184.96
18	87	10.4	108.16
3	79	2.4	5.76
15	72	-4.6	21.16
17	82	5.4	29.16
		Total	349.2

orchestra answered 1 year ago

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