The accompanying data represent the number of daysabsent,x, and the final examscore,y, for a sample of...

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Question

The accompanying data represent the number of daysabsent,x, and the final examscore,y, for a sample of college students in a general education course at a large state university.

a Find the east-squares regressiri Ine íreatng number cf absences as the explaratry vanable: and the final exam soare as th션

math Statistics-And-Probability

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Answer 1

Answer #1

Sol:

UPLOADED IMAGE IS BLURRED PLEASE

CONFIRM WHETHER THE GIVEN BELOW DATA IS CORRECT

No of absences	Finla exam score
0	88.8
1	86.7
2	83.2
3	80.7
4	78.3
5	74.6
6	64.4
7	71.7
8	65.8
9	68.6

IF THE ABOVE DATA IS CORRECT

regression equation from excel

	Coefficients	Standard Error	t Stat	P-value	Lower 95%	Upper 95%
Intercept	88.23091	1.957091	45.08267	6.47E-11	83.71785	92.74397
No of absences	-2.65576	0.366597	-7.24436	8.85E-05	-3.50113	-1.81038

Final exam score= 88.23091-2.65576*no of absences

ANSWER:

y^=-2.656x+88.231

PLEASE CONFIRM DATA

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Answer 2

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