Question 1

Percentages for different groups are expressed on a common scale with what base?

Accepted Answer

A)  0.1 
B)  1.0 
C)  10 
D)  100 
A)  0.1 
B)  1.0 
C)  10 
D)  100 D

Question 2

The standard deviation is used to describe what property of a set of scores?

Accepted Answer

A)  sample size 
B)  variability 
C)  frequency distribution 
D)  reliability 
A)  sample size 
B)  variability 
C)  frequency distribution 
D)  reliability B

Question 3

Researchers use two-way analysis of variance to determine what?

Accepted Answer

A)  the interaction of multiple independent variables on dependent variables 
B)  the interaction of multiple dependent variables 
C)  the variance between multiple dependent variables 
D)  test of the null hypothesis 
A)  the interaction of multiple independent variables on dependent variables 
B)  the interaction of multiple dependent variables 
C)  the variance between multiple dependent variables 
D)  test of the null hypothesis A

Question 4

Proportions have a base of what?

Accepted Answer

A)  0.1 
B)  1.0 
C)  10 
D)  100 
A)  0.1 
B)  1.0 
C)  10 
D)  100

Question 5

Which of the following does NOT cause a t test to yield a low probability?

Accepted Answer

A)  small sample size 
B)  small difference between means 
C)  low standard deviation 
D)  heterogeneous population 
A)  small sample size 
B)  small difference between means 
C)  low standard deviation 
D)  heterogeneous population

Question 6

When a researcher rejects the null hypothesis at exactly the .05 level (i.e., p = .05), there are how many chances in 100 that the null hypothesis is correct?

Accepted Answer

A)  .05 
B)  .5 
C)  5 
D)  20 
A)  .05 
B)  .5 
C)  5 
D)  20

Question 7

A chi-square test is used for what type of variable?

Accepted Answer

A)  dependent 
B)  independent 
C)  nominal 
D)  ordinal 
A)  dependent 
B)  independent 
C)  nominal 
D)  ordinal

Question 8

If a researcher asks participants to name the country in which they were born, the researcher is using which scale of measurement?

Accepted Answer

A)  categorical 
B)  nominal 
C)  ratio 
D)  continuous 
A)  categorical 
B)  nominal 
C)  ratio 
D)  continuous

Question 9

Which of the following is a Type I error?

Accepted Answer

A)  failing to do a chi-square test on bivariate analysis 
B)  failing to reject the null hypothesis when it is an incorrect hypothesis 
C)  rejecting the null hypothesis when it is a correct hypothesis 
D)  performing the chi-square test before determining p-value 
A)  failing to do a chi-square test on bivariate analysis 
B)  failing to reject the null hypothesis when it is an incorrect hypothesis 
C)  rejecting the null hypothesis when it is a correct hypothesis 
D)  performing the chi-square test before determining p-value

Question 10

Which of the following is a measure of how unlikely it is that results were obtained by chance?

Accepted Answer

A)  alpha 
B)  p-value 
C)  confidence level 
D)  confidence interval 
A)  alpha 
B)  p-value 
C)  confidence level 
D)  confidence interval

Question 11

Which of the following is used to describe the statistical significance of results?

Accepted Answer

A)  alpha 
B)  p-value 
C)  confidence level 
D)  confidence interval 
A)  alpha 
B)  p-value 
C)  confidence level 
D)  confidence interval

Question 12

What test might a researcher use to determine which individual pairs of means are significantly different from each other?

Accepted Answer

A)  t test 
B)  ANOVA test 
C)  multiple comparisons test 
D)  statistical regression 
A)  t test 
B)  ANOVA test 
C)  multiple comparisons test 
D)  statistical regression

Question 13

Suppose you read that t = 2.859, df = 40, p < .01 for the difference between two means. True or False: Using conventional standards, the null hypothesis should be rejected.

Accepted Answer

A) True 
 B)False

Question 14

What does this topic recommend the consumer of research attend to in the reported results of the chi-square test?

Accepted Answer

A)  degrees of freedom (df ) 
B)  p-value 
C)  chi-square value 
D)  number of variables 
A)  degrees of freedom (df ) 
B)  p-value 
C)  chi-square value 
D)  number of variables

Question 15

Which of the following is a way to say a researcher has rejected the null hypothesis?

Accepted Answer

A)  the results are statistically significant 
B)  the confidence interval is less than 0.05 
C)  the confidence level is greater than the p-value 
D)  the p-value is greater than the confidence interval 
A)  the results are statistically significant 
B)  the confidence interval is less than 0.05 
C)  the confidence level is greater than the p-value 
D)  the p-value is greater than the confidence interval

Question 16

Which of the following is used to describe the margin of error for a study?

Accepted Answer

A)  alpha 
B)  p-value 
C)  confidence level 
D)  confidence interval 
A)  alpha 
B)  p-value 
C)  confidence level 
D)  confidence interval

Question 17

How many dependent variables can there be in regression models?

Accepted Answer

A)  none 
B)  one 
C)  two 
D)  three or more 
A)  none 
B)  one 
C)  two 
D)  three or more

Question 18

What is the name of the error researchers make when they fail to reject the null hypothesis when, in fact, it is an incorrect hypothesis?

Accepted Answer

A)  Type I error 
B)  Type II error 
C)  double negative 
D)  confirmation bias 
A)  Type I error 
B)  Type II error 
C)  double negative 
D)  confirmation bias

Question 19

Which of the following is the middle of a distribution?

Accepted Answer

A)  mean 
B)  median 
C)  mode 
D)  null set 
A)  mean 
B)  median 
C)  mode 
D)  null set

Question 20

Suppose you read that t = 2.000, df = 20, p > .05 for the difference between two means. Using conventional standards, the null hypothesis should be rejected.

Accepted Answer

A) True 
 B)False

Percentages for different groups are expressed on a common scale with what base?

The standard deviation is used to describe what property of a set of scores?

Researchers use two-way analysis of variance to determine what?

Proportions have a base of what?

Which of the following does NOT cause a t test to yield a low probability?

When a researcher rejects the null hypothesis at exactly the .05 level (i.e., p = .05), there are how many chances in 100 that the null hypothesis is correct?

A chi-square test is used for what type of variable?

If a researcher asks participants to name the country in which they were born, the researcher is using which scale of measurement?

Which of the following is a Type I error?

Which of the following is a measure of how unlikely it is that results were obtained by chance?

Which of the following is used to describe the statistical significance of results?

What test might a researcher use to determine which individual pairs of means are significantly different from each other?

Suppose you read that t = 2.859, df = 40, p < .01 for the difference between two means. True or False: Using conventional standards, the null hypothesis should be rejected.

What does this topic recommend the consumer of research attend to in the reported results of the chi-square test?

Which of the following is a way to say a researcher has rejected the null hypothesis?

Which of the following is used to describe the margin of error for a study?

How many dependent variables can there be in regression models?

What is the name of the error researchers make when they fail to reject the null hypothesis when, in fact, it is an incorrect hypothesis?

Which of the following is the middle of a distribution?

Suppose you read that t = 2.000, df = 20, p > .05 for the difference between two means. Using conventional standards, the null hypothesis should be rejected.

Introduction to Research Methods

Reviewing and Citing the Literature

Basic Concepts in Quantitative Research

Sampling

Measurement

Qualitative Research Design

Designing Experimental Research

Effect Size and Meta-Analysis

Preparing Research Reports

Filters

Exam 8: Analyzing Data: Understanding Statistics

Percentages for different groups are expressed on a common scale with what base?

The standard deviation is used to describe what property of a set of scores?

Researchers use two-way analysis of variance to determine what?

Proportions have a base of what?

Which of the following does NOT cause a t test to yield a low probability?

When a researcher rejects the null hypothesis at exactly the .05 level (i.e., p = .05), there are how many chances in 100 that the null hypothesis is correct?

A chi-square test is used for what type of variable?

If a researcher asks participants to name the country in which they were born, the researcher is using which scale of measurement?

Which of the following is a Type I error?

Which of the following is a measure of how unlikely it is that results were obtained by chance?

Which of the following is used to describe the statistical significance of results?

What test might a researcher use to determine which individual pairs of means are significantly different from each other?

Suppose you read that t = 2.859, df = 40, p < .01 for the difference between two means. True or False: Using conventional standards, the null hypothesis should be rejected.

What does this topic recommend the consumer of research attend to in the reported results of the chi-square test?

Which of the following is a way to say a researcher has rejected the null hypothesis?

Which of the following is used to describe the margin of error for a study?

How many dependent variables can there be in regression models?

What is the name of the error researchers make when they fail to reject the null hypothesis when, in fact, it is an incorrect hypothesis?

Which of the following is the middle of a distribution?

Suppose you read that t = 2.000, df = 20, p > .05 for the difference between two means. Using conventional standards, the null hypothesis should be rejected.

Introduction to Research Methods

Reviewing and Citing the Literature

Basic Concepts in Quantitative Research

Sampling

Measurement

Qualitative Research Design

Designing Experimental Research

Effect Size and Meta-Analysis

Preparing Research Reports

Filters