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Question 1 Here are two lines of code: incdemo<-read.csv("incdemo2000.csv") reg1<- (birthweight~smoker, data=birthweight) R will not run because O birthweight data is not loaded. O the variables do not exist or have different names in the birthweight dataset O R is confused whether birthweight is a variable or a dataset. O There is a missing parenthesis in the code. Question 2 What do the following 2 lines of code do? reg1<-Im(birthweight-smoker+unmarried, data=birth) birth$bw<-birth$birthweight-predict(reg1, birth) O Create a new dataset containing the predicted values of birthweight for reg1 O Create a new variable in birth containing the predicted values of birthweight for reg1 O Create a new dataset containing the regression residuals for reg1. O Create a new variable in birth containing the regression residuals for reg1 Question 3 Here is a line of code: sm<-birth[c("birthweight", "nprevist", "smoker")] In this line of code, sm is: O New variable in a new dataset O A new variable in dataset birth O A new dataset with fewer observations than birth O A new dataset with fewer variables than birth

Question 1 Here are two lines of code: incdemo<-read.csv("incdemo2000.csv") reg1<- (birthweight~smoker, data=birthweight) R will not run because O birthweight data is not loaded. O the variables do not exist or have different names in the birthweight dataset O R is confused whether birthweight is a variable or a dataset. O There is a missing parenthesis in the code. Question 2 What do the following 2 lines of code do? reg1<-Im(birthweight-smoker+unmarried, data=birth) birth$bw<-birth$birthweight-predict(reg1, birth) O Create a new dataset containing the predicted values of birthweight for reg1 O Create a new variable in birth containing the predicted values of birthweight for reg1 O Create a new dataset containing the regression residuals for reg1. O Create a new variable in birth containing the regression residuals for reg1 Question 3 Here is a line of code: sm<-birth[c("birthweight", "nprevist", "smoker")] In this line of code, sm is: O New variable in a new dataset O A new variable in dataset birth O A new dataset with fewer observations than birth O A new dataset with fewer variables than birth

MATLAB: An Introduction with Applications
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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Question 1 Here are two lines of code: incdemo<-read.csv("incdemo2000.csv") reg1<- (birthweight-smoker, data=birthweight) R will not run because O birthweight data is not loaded. O the variables do not exist or have different names in the birthweight dataset O R is confused whether birthweight is a variable or a dataset. O There is a missing parenthesis in the code. Question 2 What do the following 2 lines of code do? reg1<-Im(birthweight-smoker+unmarried, data=birth) birth$bw<-birth$birthweight-predict(reg1, birth) O Create a new dataset containing the predicted values of birthweight for reg1 O Create a new variable in birth containing the predicted values of birthweight for reg1 O Create a new dataset containing the regression residuals for reg1. O Create a new variable in birth containing the regression residuals for reg1 Question 3 Here is a line of code: sm<-birth[c("birthweight", "nprevist", "smoker")] In this line of code, sm is: O New variable in a new dataset O A new variable in dataset birth A new dataset with fewer observations than birth O A new dataset with fewer variables than birth
Transcribed Image Text:Question 1 Here are two lines of code: incdemo<-read.csv("incdemo2000.csv") reg1<- (birthweight-smoker, data=birthweight) R will not run because O birthweight data is not loaded. O the variables do not exist or have different names in the birthweight dataset O R is confused whether birthweight is a variable or a dataset. O There is a missing parenthesis in the code. Question 2 What do the following 2 lines of code do? reg1<-Im(birthweight-smoker+unmarried, data=birth) birth$bw<-birth$birthweight-predict(reg1, birth) O Create a new dataset containing the predicted values of birthweight for reg1 O Create a new variable in birth containing the predicted values of birthweight for reg1 O Create a new dataset containing the regression residuals for reg1. O Create a new variable in birth containing the regression residuals for reg1 Question 3 Here is a line of code: sm<-birth[c("birthweight", "nprevist", "smoker")] In this line of code, sm is: O New variable in a new dataset O A new variable in dataset birth A new dataset with fewer observations than birth O A new dataset with fewer variables than birth
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