= 0.96 (b) 96% (c) (4 points) Find the equation of the regression line. Round your answers t one decimal place value. a=1138) (270) - (42)1842) 8(270)-(42) a 나78 b= 8(842)- (42)138) 8(270)-(42)a 2.37 (e) Y=4•8+2.4X (d) (2 points) Predict y value if x = 3 assuming the linear correlation is signifi- %3D cant. y = 408+2.6(3) Y= 12.6 (d) _2.6 (e) (2 points) Predict y value if x = 3 assuming the linear correlation is not significant. 138 =17.25 8. 17.25 (e) Page 2 of 4 Study Guide 10 Total Points: 50 (e) 2. Suppose working with a set of 8 ordered-pairs, we gathered the following: Σ- 42, Σε?-270, Σy = 138 , Σ' = 270, Σεy-842 a) (3 points) Find the value of linear correlation coefficient. Round to three decimal places. r= 8(842)- (42)(138) V8(270)-(42ja v8(2670)-138) 2 =0.4815 %3D (a) 0.982 (b) (2 points) Find the value of coefficient of determination. Round to the near- est whole percent. ra=(0.982)2 = 0.96 (b) 96% (c) (4 points) Find the equation of the regression line. Round your answers t one decimal place value. a= 1138) (270)-(42)1842) 8(270)-(42)a 4.78 b= 8(842) -142)(138) 8(270)-(42)2 = 2.37 (c) Y=4.8+2·4X (d) (2 points) Predict y value if x = 3 assuming the linear correlation is signifi- %3D cant. Y = 408+2. 6(3) Y= 12-6 (d) _ \2.6 (e) (2 points) Predict y value if x = 3 assuming the linear correlation is not significant. 138 = 17.25 8. %3D 17.25 (e) Page 2 of 4 Study Guide 10 Total Points: 50

Trigonometry (MindTap Course List)

8th Edition

ISBN:9781305652224

Author:Charles P. McKeague, Mark D. Turner

Publisher:Charles P. McKeague, Mark D. Turner

Chapter4: Graphing And Inverse Functions

Section: Chapter Questions

Problem 6GP: If your graphing calculator is capable of computing a least-squares sinusoidal regression model, use...

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Question

I need help on Letter D.) and E.)

Im trying to find the linear correlation when it is significant and not significant.

D.) Predict y value if x=3 assuming the linear correlation is significant.

E.) Predict y value if x=3 assuming the linear correlation is not significant.

= 0.96
(b) 96%
(c) (4 points) Find the equation of the regression line. Round your answers t
one decimal place value.
a=1138) (270) - (42)1842)
8(270)-(42) a
나78
b= 8(842)- (42)138)
8(270)-(42)a
2.37
(e) Y=4•8+2.4X
(d) (2 points) Predict y value if x = 3 assuming the linear correlation is signifi-
%3D
cant.
y = 408+2.6(3)
Y= 12.6
(d) _2.6
(e) (2 points) Predict y value if x = 3 assuming the linear correlation is not
significant.
138
=17.25
8.
17.25
(e)
Page 2 of 4
Study Guide 10
Total Points: 50

(e)
2. Suppose working with a set of 8 ordered-pairs, we gathered the following:
Σ- 42, Σε?-270, Σy = 138 , Σ' = 270, Σεy-842
a) (3 points) Find the value of linear correlation coefficient. Round to three
decimal places.
r= 8(842)- (42)(138)
V8(270)-(42ja v8(2670)-138) 2 =0.4815
%3D
(a) 0.982
(b) (2 points) Find the value of coefficient of determination. Round to the near-
est whole percent.
ra=(0.982)2
= 0.96
(b) 96%
(c) (4 points) Find the equation of the regression line. Round your answers t
one decimal place value.
a= 1138) (270)-(42)1842)
8(270)-(42)a
4.78
b= 8(842) -142)(138)
8(270)-(42)2
= 2.37
(c) Y=4.8+2·4X
(d) (2 points) Predict y value if x = 3 assuming the linear correlation is signifi-
%3D
cant.
Y = 408+2. 6(3)
Y= 12-6
(d) _ \2.6
(e) (2 points) Predict y value if x = 3 assuming the linear correlation is not
significant.
138
= 17.25
8.
%3D
17.25
(e)
Page 2 of 4
Study Guide 10
Total Points: 50

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