Question 1

Given that a data frame called "survey" is loaded and has a column labeled "marital", what is wrong with this command?: table(marital)

Accepted Answer

A)  The table command requires two variables, not just one. 
B)  Should be TABLE(survey$marital) 
C)  Should be table:survey$marital 
D)  Should be table(survey$marital) 
A)  The table command requires two variables, not just one. 
B)  Should be TABLE(survey$marital) 
C)  Should be table:survey$marital 
D)  Should be table(survey$marital) D

Question 2

The ANOVA family has four main variants: ANOVA, ANCOVA, MANOVA, and MANCOVA. In the text, which command(s) was/were used to implement them?

Accepted Answer

A)  anova 
B)  anova and manova 
C)  aov and manova 
D)  glm 
A)  anova 
B)  anova and manova 
C)  aov and manova 
D)  glm C

Question 3

Which was NOT used for cluster analysis in the text?

Accepted Answer

A)  clusplot from the "cluster" package 
B)  cluster.stats from the "fpc" package 
C)  NbClust from the "NbClust" package. 
D)  All of the above were used 
A)  clusplot from the "cluster" package 
B)  cluster.stats from the "fpc" package 
C)  NbClust from the "NbClust" package. 
D)  All of the above were used D

Question 4

Which R package was used for the Levene's test in ANOVA and for hypothesis testing?

Accepted Answer

A)  library(car) 
B)  library(caret) 
C)  library(cluster) 
D)  library(corrplot) 
A)  library(car) 
B)  library(caret) 
C)  library(cluster) 
D)  library(corrplot)

Question 5

Give a short answer: What is the "base::" part in the command below and what does it do? base::table(survey$marital,survey$sex)

Accepted Answer

The answer of Give a short answer: What is the...

Question 6

What command in R is used most frequently to implement ordinary least squares (OLS) regression? Fill In: __________________________

Accepted Answer

The answer of What command in R is used most...

Question 7

In logistic regression, what is a synonym for a "confusion table", created by the confusionMatrix command?

Accepted Answer

A)  a regression table 
B)  a logistic regression table 
C)  a table of logistic coefficients 
D)  a classification table 
A)  a regression table 
B)  a logistic regression table 
C)  a table of logistic coefficients 
D)  a classification table

Question 8

Which R package is NOT used in conjunction with crosstabulation?

Accepted Answer

A)  library(expss) 
B)  library(gmodels) 
C)  library(plyr) 
D)  library(vcd) 
A)  library(expss) 
B)  library(gmodels) 
C)  library(plyr) 
D)  library(vcd)

Question 9

Cronbach's alpha, a leading measure of reliability, is produced by which R package?

Accepted Answer

A)  reliability 
B)  psych 
C)  alpha 
D)  alpha. 
A)  reliability 
B)  psych 
C)  alpha 
D)  alpha.

Question 10

The "processR" package implements which type of statistical analysis?

Accepted Answer

A)  mediation and moderation analysis, as per the work of Andrew Hayes 
B)  correlation, as per the work of Francis Galton 
C)  correlation, as per the work of Karl Pearson 
D)  processR is not a statistical package 
A)  mediation and moderation analysis, as per the work of Andrew Hayes 
B)  correlation, as per the work of Francis Galton 
C)  correlation, as per the work of Karl Pearson 
D)  processR is not a statistical package

Given that a data frame called "survey" is loaded and has a column labeled "marital", what is wrong with this command?: table(marital)

The ANOVA family has four main variants: ANOVA, ANCOVA, MANOVA, and MANCOVA. In the text, which command(s) was/were used to implement them?

Which was NOT used for cluster analysis in the text?

Which R package was used for the Levene's test in ANOVA and for hypothesis testing?

Give a short answer: What is the "base::" part in the command below and what does it do? base::table(survey$marital,survey$sex)

What command in R is used most frequently to implement ordinary least squares (OLS) regression? Fill In: __________________________

In logistic regression, what is a synonym for a "confusion table", created by the confusionMatrix command?

Which R package is NOT used in conjunction with crosstabulation?

Cronbach's alpha, a leading measure of reliability, is produced by which R package?

The "processR" package implements which type of statistical analysis?

Using and Abusing Data Analytics in Social Science

Statistical Analytics With R Part 2

Classification and Regression Trees in R

Random Forests

Modeling and Machine Learning

Neural Network Models and Deep Learning

Network Analysis

Text Analytics

Filters

Exam 2: Statistical Analytics With R Part 1

Given that a data frame called "survey" is loaded and has a column labeled "marital", what is wrong with this command?: table(marital)

The ANOVA family has four main variants: ANOVA, ANCOVA, MANOVA, and MANCOVA. In the text, which command(s) was/were used to implement them?

Which was NOT used for cluster analysis in the text?

Which R package was used for the Levene's test in ANOVA and for hypothesis testing?

Give a short answer: What is the "base::" part in the command below and what does it do? base::table(survey$marital,survey$sex)

What command in R is used most frequently to implement ordinary least squares (OLS) regression? Fill In: __________________________

In logistic regression, what is a synonym for a "confusion table", created by the confusionMatrix command?

Which R package is NOT used in conjunction with crosstabulation?

Cronbach's alpha, a leading measure of reliability, is produced by which R package?

The "processR" package implements which type of statistical analysis?

Using and Abusing Data Analytics in Social Science

Statistical Analytics With R Part 2

Classification and Regression Trees in R

Random Forests

Modeling and Machine Learning

Neural Network Models and Deep Learning

Network Analysis

Text Analytics

Filters