Refer to the accompanying scatterplot. The four points in the lower left corner are measurements from women, and the four points Ay in the upper right corner are from men. Complete parts (a) through (e) below. 12- 9- :: 6- 0- 9 12 a. Examine the pattern of the four points in the lower left corner (from women) only, and subjectively determine whether there appears to be a correlation between x and y for women. Choose the correct answer below. A. There appears to be a linear correlation because the points form a line. B. There does not appear to be a linear correlation because the points do not form a line. OC. There appears to be a linear correlation because the points form an obvious pattern. OD. There does not appear to be a linear correlation because the points form an obvious pattern. b. Examine the pattern of the four points in the upper right corner (from men) only, and subjectively determine whether there appears to be a correlation between x and y for men. Choose the correct answer below. O A. There does not appear to be a linear correlation because the points form an obvious pattern. B. There appears to be a linear correlation because the points form an obvious pattern. O C. There appears to be a linear correlation because the points form a line. D. There does not appear to be a linear correlation because the points do not form a line. c. Find the linear correlation coefficient using only the four points in the lower left corner (for women). Will the four points in the upper right corner (for men) have the same linear correlation coefficient? The correlation coefficient for the points in the lower left corner isr= (Type an integer or a fraction.)
Refer to the accompanying scatterplot. The four points in the lower left corner are measurements from women, and the four points Ay in the upper right corner are from men. Complete parts (a) through (e) below. 12- 9- :: 6- 0- 9 12 a. Examine the pattern of the four points in the lower left corner (from women) only, and subjectively determine whether there appears to be a correlation between x and y for women. Choose the correct answer below. A. There appears to be a linear correlation because the points form a line. B. There does not appear to be a linear correlation because the points do not form a line. OC. There appears to be a linear correlation because the points form an obvious pattern. OD. There does not appear to be a linear correlation because the points form an obvious pattern. b. Examine the pattern of the four points in the upper right corner (from men) only, and subjectively determine whether there appears to be a correlation between x and y for men. Choose the correct answer below. O A. There does not appear to be a linear correlation because the points form an obvious pattern. B. There appears to be a linear correlation because the points form an obvious pattern. O C. There appears to be a linear correlation because the points form a line. D. There does not appear to be a linear correlation because the points do not form a line. c. Find the linear correlation coefficient using only the four points in the lower left corner (for women). Will the four points in the upper right corner (for men) have the same linear correlation coefficient? The correlation coefficient for the points in the lower left corner isr= (Type an integer or a fraction.)
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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Concept explainers
Correlation
Correlation defines a relationship between two independent variables. It tells the degree to which variables move in relation to each other. When two sets of data are related to each other, there is a correlation between them.
Linear Correlation
A correlation is used to determine the relationships between numerical and categorical variables. In other words, it is an indicator of how things are connected to one another. The correlation analysis is the study of how variables are related.
Regression Analysis
Regression analysis is a statistical method in which it estimates the relationship between a dependent variable and one or more independent variable. In simple terms dependent variable is called as outcome variable and independent variable is called as predictors. Regression analysis is one of the methods to find the trends in data. The independent variable used in Regression analysis is named Predictor variable. It offers data of an associated dependent variable regarding a particular outcome.
Question
Transcribed Image Text:Refer to the accompanying scatterplot. The four points in the lower left corner are measurements from women, and the four points
Ay
in the upper right corner are from men. Complete parts (a) through (e) below.
12-
9-
::
6-
0+
9 12
a. Examine the pattern of the four points in the lower left corner (from women) only, and subjectively determine whether there appears to be a correlation between x
and y for women. Choose the correct answer below.
A. There appears to be a linear correlation because the points form a line.
B. There does not appear to be a linear correlation because the points do not form a line.
OC. There appears to be a linear correlation because the points form an obvious pattern.
OD. There does not appear to be a linear correlation because the points form an obvious pattern.
b. Examine the pattern of the four points in the upper right corner (from men) only, and subjectively determine whether there appears to be a correlation between x
and y for men. Choose the correct answer below.
O A. There does not appear to be a linear correlation because the points form an obvious pattern.
B. There appears to be a linear correlation because the points form an obvious pattern.
OC. There appears to be a linear correlation because the points form a line.
D. There does not appear to be a linear correlation because the points do not form a line.
c. Find the linear correlation coefficient using only the four points in the lower left corner (for women). Will the four points in the upper right corner (for men) have the
same linear correlation coefficient?
The correlation coefficient for the points in the lower left corner isr=
(Type an integer or a fraction.)
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