Question 1

The most common data format is:

Accepted Answer

A)  long 
B)  short 
C)  stacked 
D)  unstacked 
A)  long 
B)  short 
C)  stacked 
D)  unstacked

Question 2

The students at a small community college in Iowa apply to study either English or Business. Some administrators at the college are concerned that women are being discriminated against in being allowed admittance, particularly in the business program. Below, you will find two pivot tables that show the percentage of students admitted by gender to the English program and the Business school. The data has also been presented graphically. What do the data and graphs indicate?     Business school

Accepted Answer

These data indicate that a smaller perce

Question 3

It is possible that the data points close to a curve have a correlation close to 0, because correlation is relevant only for measuring linear relationships.

Accepted Answer

A) True 
 B)False

Question 4

Changing the location of fields in a pivot table is known as:

Accepted Answer

A)  slicing 
B)  dicing 
C)  sorting 
D)  pivoting 
A)  slicing 
B)  dicing 
C)  sorting 
D)  pivoting

Question 5

Approximate the percentage of these internet users who are women in the 30-43 age group.

Accepted Answer

The answer of Approximate the percentage of these internet users...

Question 6

What percentage of the students in the sample spent the weekend studying and did well in the final exam?

Accepted Answer

60 out of

Question 7

Relationships between two variables are less evident when counts are expressed as percentages of row totals or column totals.

Accepted Answer

A) True 
 B)False

Question 8

Approximate the percentage of these Internet users who are married.

Accepted Answer

The answer of Approximate the percentage of these Internet users...

Question 9

What does a scatterplot illustrate?

Accepted Answer

A)  whether there is any relationship between two variables 
B)  what type of relationship there is between two variables 
C)  both of these choices 
D)  neither of these choices 
A)  whether there is any relationship between two variables 
B)  what type of relationship there is between two variables 
C)  both of these choices 
D)  neither of these choices

Question 10

What percentage of the students in the sample went partying the weekend before the final exam and did well in the exam?

Accepted Answer

22 out of

Question 11

Comparing a numerical variable across two or more subpopulations is known as a comparison problem.

Accepted Answer

A) True 
 B)False

Question 12

Counts for categorical variable are often expressed as percentages of the total.

Accepted Answer

A) True 
 B)False

Question 13

Which correlation coefficient suggests the strongest relationship?

Accepted Answer

A)  +1 
B)  -0.1 
C)  0 
D)  +0.5 
A)  +1 
B)  -0.1 
C)  0 
D)  +0.5

Question 14

The cutoff for defining a large correlation is 0.5.

Accepted Answer

A) True 
 B)False

Question 15

What percentage of the students in the sample went partying the weekend before the final exam and did poorly on the exam?

Accepted Answer

53 out of

Question 16

The following scatterplot compares the selling price and the appraised value.   Is there a linear relationship between these two variables? If so, how would you characterize the relationship?

Accepted Answer

Yes, there is a linear relationship. Cor

Question 17

If the sample is a good representation of the population, what percentage of the students in the population should we expect to spend the weekend studying and do poorly on the final exam?

Accepted Answer

15 out of

Question 18

We study relationships among numerical variables using:

Accepted Answer

A)  correlation 
B)  covariance 
C)  scatterplot charts 
D)  all of these choices 
E)  none of these choices 
A)  correlation 
B)  covariance 
C)  scatterplot charts 
D)  all of these choices 
E)  none of these choices

Question 19

If the coefficient of correlation r = 0 .80, the standard deviations of X and Y are 20 and 25, respectively, then Cov(X, Y) must be 400.

Accepted Answer

A) True 
 B)False

Question 20

Statisticians often refer to the pivot tables that display counts as contingency tables or crosstabs.

Accepted Answer

A) True 
 B)False

The most common data format is:

It is possible that the data points close to a curve have a correlation close to 0, because correlation is relevant only for measuring linear relationships.

Changing the location of fields in a pivot table is known as:

Approximate the percentage of these internet users who are women in the 30-43 age group.

What percentage of the students in the sample spent the weekend studying and did well in the final exam?

Relationships between two variables are less evident when counts are expressed as percentages of row totals or column totals.

Approximate the percentage of these Internet users who are married.

What does a scatterplot illustrate?

What percentage of the students in the sample went partying the weekend before the final exam and did well in the exam?

Comparing a numerical variable across two or more subpopulations is known as a comparison problem.

Counts for categorical variable are often expressed as percentages of the total.

Which correlation coefficient suggests the strongest relationship?

The cutoff for defining a large correlation is 0.5.

What percentage of the students in the sample went partying the weekend before the final exam and did poorly on the exam?

The following scatterplot compares the selling price and the appraised value. Is there a linear relationship between these two variables? If so, how would you characterize the relationship?

If the sample is a good representation of the population, what percentage of the students in the population should we expect to spend the weekend studying and do poorly on the final exam?

We study relationships among numerical variables using:

If the coefficient of correlation r = 0 .80, the standard deviations of X and Y are 20 and 25, respectively, then Cov(X, Y) must be 400.

Statisticians often refer to the pivot tables that display counts as contingency tables or crosstabs.

Introduction to Business Analytics

Describing the Distribution of a Single Variable

Probability and Probability Distributions

Normal, Binomial, Poisson, and Exponential Distributions

Decision Making Under Uncertainty

Sampling and Sampling Distributions

Confidence Interval Estimation

Hypothesis Testing

Regression Analysis: Estimating Relationships

Regression Analysis: Statistical Inference

Time Series Analysis and Forecasting

Introduction to Optimization Modeling

Optimization Models

Introduction to Simulation Modeling

Simulation Models

Data Mining

Importing Data Into Excel

Analysis of Variance and Experimental Design

Statistical Process Control

Filters

Exam 3: Finding Relationships Among Variables

The most common data format is:

It is possible that the data points close to a curve have a correlation close to 0, because correlation is relevant only for measuring linear relationships.

Changing the location of fields in a pivot table is known as:

Approximate the percentage of these internet users who are women in the 30-43 age group.

What percentage of the students in the sample spent the weekend studying and did well in the final exam?

Relationships between two variables are less evident when counts are expressed as percentages of row totals or column totals.

Approximate the percentage of these Internet users who are married.

What does a scatterplot illustrate?

What percentage of the students in the sample went partying the weekend before the final exam and did well in the exam?

Comparing a numerical variable across two or more subpopulations is known as a comparison problem.

Counts for categorical variable are often expressed as percentages of the total.

Which correlation coefficient suggests the strongest relationship?

The cutoff for defining a large correlation is 0.5.

What percentage of the students in the sample went partying the weekend before the final exam and did poorly on the exam?

The following scatterplot compares the selling price and the appraised value. Is there a linear relationship between these two variables? If so, how would you characterize the relationship?

If the sample is a good representation of the population, what percentage of the students in the population should we expect to spend the weekend studying and do poorly on the final exam?

We study relationships among numerical variables using:

If the coefficient of correlation r = 0 .80, the standard deviations of X and Y are 20 and 25, respectively, then Cov(X, Y) must be 400.

Statisticians often refer to the pivot tables that display counts as contingency tables or crosstabs.

Introduction to Business Analytics

Describing the Distribution of a Single Variable

Probability and Probability Distributions

Normal, Binomial, Poisson, and Exponential Distributions

Decision Making Under Uncertainty

Sampling and Sampling Distributions

Confidence Interval Estimation

Hypothesis Testing

Regression Analysis: Estimating Relationships

Regression Analysis: Statistical Inference

Time Series Analysis and Forecasting

Introduction to Optimization Modeling

Optimization Models

Introduction to Simulation Modeling

Simulation Models

Data Mining

Importing Data Into Excel

Analysis of Variance and Experimental Design

Statistical Process Control

Filters