A data set is given below. (a) Draw a scatter diagram. Comment on the type of relation that appears to exist between x and y. (b) Given that x = 3.8333, s, = 2.0412, y= 3.9167, s, = 1.5497, and r= -0.9220, determine the least-squares regression line. (c) Graph the least-squares regression line on the scatter diagram drawn in part (a). 4 4 6 y 5.1 5.9 4.5 3.7 2.0 2.3 (a) Choose the correct graph below. OA. OB. OD. Ay Ay 6- 6+ 0- There appears to be a linear, negative relationship. (b) ý =Dx+ (O (Round to three decimal places as needed.)
A data set is given below. (a) Draw a scatter diagram. Comment on the type of relation that appears to exist between x and y. (b) Given that x = 3.8333, s, = 2.0412, y= 3.9167, s, = 1.5497, and r= -0.9220, determine the least-squares regression line. (c) Graph the least-squares regression line on the scatter diagram drawn in part (a). 4 4 6 y 5.1 5.9 4.5 3.7 2.0 2.3 (a) Choose the correct graph below. OA. OB. OD. Ay Ay 6- 6+ 0- There appears to be a linear, negative relationship. (b) ý =Dx+ (O (Round to three decimal places as needed.)
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Answer last two questions. First one is done already.
A data set is given below.
(a) Draw a scatter diagram . Comment on the type of relation that appears to exist between x and y.
(b) Given that
x overbar
equals3.8333
,
s Subscript x
equals2.0412
,
y overbar
equals3.9167
,
s Subscript y
equals1.5497
,
and
requals
negative 0.9220
,
determine the least-squares regression line.(c) Graph the least-squares regression line on the scatter diagram drawn in part (a).
|
x
|
1
|
|---|
2
4
4
6
6
|
|
|
|
y
|
5.1
|
|---|
5.9
4.5
3.7
2.0
2.3
Transcribed Image Text:A data set is given below.
(a) Draw a scatter diagram. Comment on the type of relation that appears to exist between x and y.
(b) Given that x = 3.8333, s, =2.0412, y = 3.9167, s, = 1.5497, and r= - 0.9220, determine the least-squares regression line.
(c) Graph the least-squares regression line on the scatter diagram drawn in part (a).
1
2
4
4
y
5.1
5.9 4.5 3.7
2.0 2.3
...
(a) Choose the correct graph below.
O A.
В.
D.
Ay
6-
Ay
6-
Ay
6-
6-
X
0-
0-
0-
6
There appears to be a linear, negative relationship.
(b) y =x+ (O)
(Round to three decimal places as needed.)
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