b) Do you think a linear model is appropriate? Explain. O A. The scatterplot shows points in a tightly clustered single stream that form a straight line, so a linear regression is definitely appropriate. B. The scatterplot appears to have slight curvature at one end of the age distribution, so a linear regression may not be completely appropriate. O C. The scatterplot does not show any discernable trend or pattern, so a linear regression is definitely not appropriate. O D. The scatterplot shows a curved line, so a linear regression is not appropriate unless the variables are transformed to make the scatterplot more linear. c) Find the equation of the regression line. Browsing Time =+Age (Round the constant to one decimal place as needed. Round the Age coefficient to three decimal places as needed.)

b) Do you think a linear model is appropriate? Explain. O A. The scatterplot shows points in a tightly clustered single stream that form a straight line, so a linear regression is definitely appropriate. B. The scatterplot appears to have slight curvature at one end of the age distribution, so a linear regression may not be completely appropriate. O C. The scatterplot does not show any discernable trend or pattern, so a linear regression is definitely not appropriate. O D. The scatterplot shows a curved line, so a linear regression is not appropriate unless the variables are transformed to make the scatterplot more linear. c) Find the equation of the regression line. Browsing Time =+Age (Round the constant to one decimal place as needed. Round the Age coefficient 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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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

Several studies have found that the frequency with which shoppers browse Internet retailers is related to the frequency with which they actually purchase products
and/or services online. The data in the accompanying table show the age of respondents and their answer to the question "how many minutes do you browse online
retailers per week?" Complete parts a through d.
ts
Click the icon to view the data table.
...
b) Do you think a linear model is appropriate? Explain.
tent
O A. The scatterplot shows points in a tightly clustered single stream that form a straight line, so a linear regression is definitely appropriate.
CB. The scatterplot appears to have slight curvature at one end of the age distribution, so a linear regression may not be completely appropriate.
O C. The scatterplot does not show any discernable trend or pattern, so a linear regression is definitely not appropriate.
esou
O D. The scatterplot shows a curved line, so a linear regression is not appropriate unless the variables are transformed to make the scatterplot more linear.
c) Find the equation of the regression line.
e Res
Browsing Time = +Age
Opti
(Round the constant to one decimal place as needed. Round the Age coefficient to three decimal places as needed.)

Browsing Time (min/wk)
491
186
179
384
121
120
276
81
510
252
126
359
570
588
498
Age
21
50
44
32
55
59
38
22
21
45
52
33
18
17
21

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