Given the bivariate data: 1 5. y (a) Draw a scatter diagram for the data. 40 Graph Layers After you add an object to the graph you can use Graph Layers to view and edit its properties. Fill -10 110 No Solution O Help WebAssign. Graphing Tool (b) Find n, Ex, Ey, Ex2, (Ex)2, and Exy. = 5 Σχ 17 %3D Ey Ex2 = 20 75 %3D (Ex)2 = 110 Exy = 46 (c) Find a, the slope of the least-squares line, and b, the y-intercept of the least-squares line. (Round your answers to two decimal places.) a = 8.35 b = -1.28

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
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Chapter1: Starting With Matlab
Section: Chapter Questions
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Given the bivariate data:

(d) Draw the least-squares line on the scatter diagram from part (a).
10
y
-10
10
-10
-10
10
10
y
y
10
-10
10
х
-10
-10
(e) Is the point (x, y) on the least-squares line?
O Yes
O No
(f) Use the equation of the least-squares line to predict the value of y when x = 4.1. (Round your answer to two decimal places.)
y =
(g) Find, to the nearest hundredth, the linear correlation coefficient.
|-0.968
Transcribed Image Text:(d) Draw the least-squares line on the scatter diagram from part (a). 10 y -10 10 -10 -10 10 10 y y 10 -10 10 х -10 -10 (e) Is the point (x, y) on the least-squares line? O Yes O No (f) Use the equation of the least-squares line to predict the value of y when x = 4.1. (Round your answer to two decimal places.) y = (g) Find, to the nearest hundredth, the linear correlation coefficient. |-0.968
Given the bivariate data:
3
5
6
y
6 5
2
(a) Draw a scatter diagram for the data.
Graph Layers
10
After you add an object to the graph you
can use Graph Layers to view and edit its
properties.
Fill
-10 3 -7
10
No
Solution
-3
O Help
WebAssign. Graphing Tool
(b) Find n, Σx , Σy , Σχ?, (Σx), and Σxy.
= 5
Σχ
17
Ey
= 20
Ix2
= 75
(Ex)2
= 110
Exy
= 46
(c) Find a, the slope of the least-squares line, and b, the y-intercept of the least-squares line. (Round your answers to two decimal places.)
a = 8.35
b = |-1.28
Transcribed Image Text:Given the bivariate data: 3 5 6 y 6 5 2 (a) Draw a scatter diagram for the data. Graph Layers 10 After you add an object to the graph you can use Graph Layers to view and edit its properties. Fill -10 3 -7 10 No Solution -3 O Help WebAssign. Graphing Tool (b) Find n, Σx , Σy , Σχ?, (Σx), and Σxy. = 5 Σχ 17 Ey = 20 Ix2 = 75 (Ex)2 = 110 Exy = 46 (c) Find a, the slope of the least-squares line, and b, the y-intercept of the least-squares line. (Round your answers to two decimal places.) a = 8.35 b = |-1.28
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