A professor at Ltts College is interested in the relationship between hours spent studying and total points earned in a course. Data collected on 10 students who took the course last quarter are given below. Student No. Hours Spent Studying Total Points Earned 1 25 18 2 10 13 3 70 53 4 40 43 5 85 68 6 45 28 7 70 68 8 60 58 9 35 23 10 55 43 1. Does the scatter plot suggest a linear relation between Hours (X) and Points (Y)? A.X and Y are related, but not linearly related. B.There is a strong linear relationship between X and Y. C. X and Y do not seem to be linearly related as seen from the scatter plot. D.There is a weak linear relationship between X and Y. 1a. By looking at the scatter plot, would you think X and Y are positively or negatively correlated? A. Positively B. Negatively
A professor at Ltts College is interested in the relationship between hours spent studying and total points earned in a course. Data collected on 10 students who took the course last quarter are given below. Student No. Hours Spent Studying Total Points Earned 1 25 18 2 10 13 3 70 53 4 40 43 5 85 68 6 45 28 7 70 68 8 60 58 9 35 23 10 55 43 1. Does the scatter plot suggest a linear relation between Hours (X) and Points (Y)? A.X and Y are related, but not linearly related. B.There is a strong linear relationship between X and Y. C. X and Y do not seem to be linearly related as seen from the scatter plot. D.There is a weak linear relationship between X and Y. 1a. By looking at the scatter plot, would you think X and Y are positively or negatively correlated? A. Positively B. Negatively
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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A professor at Ltts College is interested in the relationship between hours spent studying and total points earned in a course. Data collected on 10 students who took the course last quarter are given below.
|
Student No. |
Hours Spent Studying |
Total Points Earned |
|
1 |
25 |
18 |
|
2 |
10 |
13 |
|
3 |
70 |
53 |
|
4 |
40 |
43 |
|
5 |
85 |
68 |
|
6 |
45 |
28 |
|
7 |
70 |
68 |
|
8 |
60 |
58 |
|
9 |
35 |
23 |
|
10 |
55 |
43 |
1. Does the
A.X and Y are related, but not linearly related.
B.There is a strong linear relationship between X and Y.
C. X and Y do not seem to be linearly related as seen from the scatter plot.
D.There is a weak linear relationship between X and Y.
1a. By looking at the scatter plot, would you think X and Y are positively or negatively correlated ?
A. Positively
B. Negatively
Transcribed Image Text:A linear regression model is the gray line:
Y = Bo + B1 X + ɛ
where X (independent variable or explanatory variable) is Hours, and Y (dependent variable or response
variable) is Points.
An estimated regression line is the red line:
Y_hat = bo + b1 X
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