Question 1

The one-sample t-test assumes that the groups have equal variances.

Accepted Answer

A) True 
 B)False

Question 2

The t-test grew out of the work of whom?

Accepted Answer

A)  William Student 
B)  William Gosset 
C)  William Guinness 
D)  A group of students working at the Guinness Brewery 
A)  William Student 
B)  William Gosset 
C)  William Guinness 
D)  A group of students working at the Guinness Brewery

Question 3

The assumption in the independent sample t-test that the variances for the two populations are equal is also known as the assumption of __________.

Accepted Answer

A)  heterogeneity of variance 
B)  homogeneity of variance 
C)  equality of variation 
D)  normal distribution 
A)  heterogeneity of variance 
B)  homogeneity of variance 
C)  equality of variation 
D)  normal distribution

Question 4

The independent variable in an independent sample t-test must be what type of variable?

Accepted Answer

A)  dichotomous 
B)  continuous 
C)  ordinal 
D)  interval 
A)  dichotomous 
B)  continuous 
C)  ordinal 
D)  interval

Question 5

One of the assumptions of the t-test is that the variable from which the mean is calculated is a _______________ variable.

Accepted Answer

A)  categorical 
B)  dichotomous 
C)  continuous 
D)  ordinal 
A)  categorical 
B)  dichotomous 
C)  continuous 
D)  ordinal

Question 6

Which of the following pairings would be used in a matched-subjects design?

Accepted Answer

A)  males and females 
B)  people who ate lunch and people who did not eat lunch 
C)  a husband and wife pair 
D)  The same group at times 1 and 2 
A)  males and females 
B)  people who ate lunch and people who did not eat lunch 
C)  a husband and wife pair 
D)  The same group at times 1 and 2

Question 7

If you are comparing the mean scores of two groups with no overlapping members, you would use a(n) _______________.

Accepted Answer

A)  descriptive statistics analysis 
B)  one-sample t-test 
C)  paired sample t-test 
D)  independent samples t-test 
A)  descriptive statistics analysis 
B)  one-sample t-test 
C)  paired sample t-test 
D)  independent samples t-test

Question 8

Do you think Jim's research is in alignment up to this point? Why or why not?

Accepted Answer

Based on the current progress and findin

Question 9

Brian is interested in the level of satisfaction of new clients who visit the city employment department before and after he changes the model of service delivery. What test would you use in this situation?

Accepted Answer

A)  descriptive statistics 
B)  one-sample t-test 
C)  paired sample t-test 
D)  independent samples t-test 
A)  descriptive statistics 
B)  one-sample t-test 
C)  paired sample t-test 
D)  independent samples t-test

Question 10

When Jim compared the response times between 2010 and 2011, this is an example of a repeated measures design.

Accepted Answer

A) True 
 B)False

Question 11

Connor is trying to determine if he is meeting the company standard of loading 60 pallets of grain per hour onto company trucks. What test should he perform to determine if he is significantly higher or lower than the company standard?

Accepted Answer

A)  one-sample t-test 
B)  independent samples t-test 
C)  paired sample t-test 
D)  Levene's test 
A)  one-sample t-test 
B)  independent samples t-test 
C)  paired sample t-test 
D)  Levene's test

Question 12

Jim runs a paired sample t-test to compare emergency vehicle response time in 2009 to emergency vehicle response time in 2010 and obtains a p-value of .04. What does this mean?

Accepted Answer

A)  There is no significant difference between 2009 and 2010 response times 
B)  There is a significant difference between 2009 and 2010 response times 
C)  The response time in 2010 was significantly lower than the response time in 2009 
D)  The response time in 2010 was significantly higher than the response time in 2009 
A)  There is no significant difference between 2009 and 2010 response times 
B)  There is a significant difference between 2009 and 2010 response times 
C)  The response time in 2010 was significantly lower than the response time in 2009 
D)  The response time in 2010 was significantly higher than the response time in 2009

Question 13

The purpose of both the independent samples t-test and paired sample t-test is to analyze how closely related the two groups are to one another.

Accepted Answer

A) True 
 B)False

Question 14

The t-test is used to examine the __________________ between groups.

Accepted Answer

A)  relationship 
B)  overlap 
C)  difference 
D)  correlation 
A)  relationship 
B)  overlap 
C)  difference 
D)  correlation

Question 15

Professors at a university are interested in the students' level of research skills at the beginning of a course and at the end of that course. What type of research design describes this situation?

Accepted Answer

A)  snapshot design 
B)  repeated measures design 
C)  paired-samples design 
D)  matched-subject design 
A)  snapshot design 
B)  repeated measures design 
C)  paired-samples design 
D)  matched-subject design

Question 16

A test which compares the mean of one group to a set value is called a ______________.

Accepted Answer

A)  descriptive statistic test 
B)  independent samples t-test 
C)  dependent sample t-test 
D)  one-sample t-test 
A)  descriptive statistic test 
B)  independent samples t-test 
C)  dependent sample t-test 
D)  one-sample t-test

Question 17

A p-value of less than .05 on the Levene's Test indicates that the group means are significantly different from each other.

Accepted Answer

A) True 
 B)False

Question 18

An appropriate test to use with a repeated measures design is the ________________.

Accepted Answer

A)  one-sample t-test 
B)  independent samples t-test 
C)  paired-sample t-test 
D)  dependent-sample t-test 
A)  one-sample t-test 
B)  independent samples t-test 
C)  paired-sample t-test 
D)  dependent-sample t-test

The one-sample t-test assumes that the groups have equal variances.

The t-test grew out of the work of whom?

The assumption in the independent sample t-test that the variances for the two populations are equal is also known as the assumption of __________.

The independent variable in an independent sample t-test must be what type of variable?

One of the assumptions of the t-test is that the variable from which the mean is calculated is a _______________ variable.

Which of the following pairings would be used in a matched-subjects design?

If you are comparing the mean scores of two groups with no overlapping members, you would use a(n) _______________.

Do you think Jim's research is in alignment up to this point? Why or why not?

Brian is interested in the level of satisfaction of new clients who visit the city employment department before and after he changes the model of service delivery. What test would you use in this situation?

When Jim compared the response times between 2010 and 2011, this is an example of a repeated measures design.

Connor is trying to determine if he is meeting the company standard of loading 60 pallets of grain per hour onto company trucks. What test should he perform to determine if he is significantly higher or lower than the company standard?

Jim runs a paired sample t-test to compare emergency vehicle response time in 2009 to emergency vehicle response time in 2010 and obtains a p-value of .04. What does this mean?

The purpose of both the independent samples t-test and paired sample t-test is to analyze how closely related the two groups are to one another.

The t-test is used to examine the __________________ between groups.

Professors at a university are interested in the students' level of research skills at the beginning of a course and at the end of that course. What type of research design describes this situation?

A test which compares the mean of one group to a set value is called a ______________.

A p-value of less than .05 on the Levene's Test indicates that the group means are significantly different from each other.

An appropriate test to use with a repeated measures design is the ________________.

When a Practitioner Becomes a Researcher

Research Alignment

Identifying the Focus of the Research

Research Design

Sample Selection

Data Collection

Quantitative Data Preparation and Descriptive Statistics

Hypothesis Testing and Statistical Significance

Comparing Means of More Than Two Groups

Bivariate Correlation

Chi-Square Analysis

Regression Analysis

Qualitative Data Analysis

Writing Reports

Using Research Methods for Continuous Improvement

Filters

Exam 9: Comparing Means Between Two Groups

The one-sample t-test assumes that the groups have equal variances.

The t-test grew out of the work of whom?

The assumption in the independent sample t-test that the variances for the two populations are equal is also known as the assumption of __________.

The independent variable in an independent sample t-test must be what type of variable?

One of the assumptions of the t-test is that the variable from which the mean is calculated is a _______________ variable.

Which of the following pairings would be used in a matched-subjects design?

If you are comparing the mean scores of two groups with no overlapping members, you would use a(n) _______________.

Do you think Jim's research is in alignment up to this point? Why or why not?

Brian is interested in the level of satisfaction of new clients who visit the city employment department before and after he changes the model of service delivery. What test would you use in this situation?

When Jim compared the response times between 2010 and 2011, this is an example of a repeated measures design.

Connor is trying to determine if he is meeting the company standard of loading 60 pallets of grain per hour onto company trucks. What test should he perform to determine if he is significantly higher or lower than the company standard?

Jim runs a paired sample t-test to compare emergency vehicle response time in 2009 to emergency vehicle response time in 2010 and obtains a p-value of .04. What does this mean?

The purpose of both the independent samples t-test and paired sample t-test is to analyze how closely related the two groups are to one another.

The t-test is used to examine the __________________ between groups.

Professors at a university are interested in the students' level of research skills at the beginning of a course and at the end of that course. What type of research design describes this situation?

A test which compares the mean of one group to a set value is called a ______________.

A p-value of less than .05 on the Levene's Test indicates that the group means are significantly different from each other.

An appropriate test to use with a repeated measures design is the ________________.

When a Practitioner Becomes a Researcher

Research Alignment

Identifying the Focus of the Research

Research Design

Sample Selection

Data Collection

Quantitative Data Preparation and Descriptive Statistics

Hypothesis Testing and Statistical Significance

Comparing Means of More Than Two Groups

Bivariate Correlation

Chi-Square Analysis

Regression Analysis

Qualitative Data Analysis

Writing Reports

Using Research Methods for Continuous Improvement

Filters