(a) The total variation in the sample y-values is given by the (Choose one) which for these data is (Choose one) (b) The value r is the proportion of the total variation in the sample y-values that is explained by the estimated linear relationship between x and y. For these data, the value of r is. (Round your answer to at least 2 decimal places.) The least-squares regression line given above is said to be a line which "best fits" the sample data. The term "best fits" is used because the line has an equation that minimizes the (Choose one) (c) which for these data is (Choose one) V
(a) The total variation in the sample y-values is given by the (Choose one) which for these data is (Choose one) (b) The value r is the proportion of the total variation in the sample y-values that is explained by the estimated linear relationship between x and y. For these data, the value of r is. (Round your answer to at least 2 decimal places.) The least-squares regression line given above is said to be a line which "best fits" the sample data. The term "best fits" is used because the line has an equation that minimizes the (Choose one) (c) which for these data is (Choose one) V
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
Related questions
Question

Transcribed Image Text:Bivariate data obtained for the paired variables x and y are shown below, in the table labeled "Sample data." These data are plotted in the scatter plot in Figure
1, which also displays the least-squares regression line for the data. The equation for this line is y=254.65 -0.95x.
In the "Calculations" table are calculations involving the observed y-values, the mean y of these values, and the values y predicted from the regression
equation.
Sample data
Calculations
160+
y
y-y
112.2
147.6
150+
311.8756
0.2116
328.3344
122.0
145.8
140+
251.5396
49.7025
77.6161
127.4
123.9
130+
36.4816
94.4784
13.5424
142.9
122.3
120+
58.3696
11.5940
121.9920
110+
151.0
110.1
393.6256
1.2100
351.1876
Column sum:
Column sum:
Column sum:
110
120 130
140
150
160
1051.8920
157.1965
892.6725
Figure 1
Answer the following.
which for these data is
(a)
The total variation in the sample y-values is given by the (Choose one)
(Choose one)
-. -०० ---
2. .
Submit Assig
TL
Continue
MacBook Air
F10
FB
F6
F5
D00 F4
80,
F3

Transcribed Image Text:1051.8920
157.1965
892.6725
130
140
150
160
Figure 1
nswer the following.
(a)
The total variation in the sample y-values is given by the (Choose one)
which for these data is
(Choose one) V
Help
(b)
The value r is the proportion of the total variation in the sample y-values that is explained by the estimated linear
relationship between x and y. For these data, the value of r is. (Round your answer to at least 2 decimal
places.)
The least-squares regression line given above is said to be a line which "best fits" the sample data. The term "best
fits" is used because the line has an equation that minimizes the (Choose one)
(c)
which for these
data is (Choose one)
Submit Assignmer
Continue
MacBook Air
FIO
F9
FB
F7
F5
吕口
F4
F1
*
&
2$
%
8
9
2#
7
4.
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