Question 1

Probability pyramiding is not a problem when planned comparisons are used.

Accepted Answer

A) True 
 B)False  False

Question 2

An estimate of the amount of variability in sample means expected across a series of samples is provided by the:

Accepted Answer

A)  standard deviation of the mean. 
B)  standard error of the mean. 
C)  standardized variability around the mean. 
D)  error variance. 
A)  standard deviation of the mean. 
B)  standard error of the mean. 
C)  standardized variability around the mean. 
D)  error variance. B

Question 3

You have just completed an experiment in which different subjects were randomly assigned to an experimental and a control group. Your dependent variable was the number of errors made on a memory test. The most appropriate parametric statistic for your data is the:

Accepted Answer

A)  t test for independent samples. 
B)  t test for correlated samples. 
C)  z test for proportions. 
D)  All of the answers are correct. 
A)  t test for independent samples. 
B)  t test for correlated samples. 
C)  z test for proportions. 
D)  All of the answers are correct. A

Question 4

A statistically significant effect always has practical significance.

Accepted Answer

A) True 
 B)False

Question 5

Draw a graph showing an interaction between two variables in a two-factor design. Would you still be interested in interpreting the main effects? Why or why not?

Accepted Answer

Yes, I would still be interested in inte

Question 6

A one-tailed test should be used only if you can specify the direction of an effect before conducting your experiment.

Accepted Answer

A) True 
 B)False

Question 7

The Latin square analysis of variance is used to:

Accepted Answer

A)  correct for otherwise uncorrectable biases due to uneven subject loss. 
B)  counterbalance the order in which subjects receive treatments in within-subjects experiments. 
C)  control family wise error in multiple comparisons. 
D)  None of the answers is correct. 
A)  correct for otherwise uncorrectable biases due to uneven subject loss. 
B)  counterbalance the order in which subjects receive treatments in within-subjects experiments. 
C)  control family wise error in multiple comparisons. 
D)  None of the answers is correct.

Question 8

If one ends up with unequal sample sizes for reasons unrelated to the effects of one's treatments, one could use a(n) _____ that involves a minor correction to the analysis of variance (ANOVA).

Accepted Answer

A)  unweighted means analysis 
B)  t test for independent samples 
C)  z test for the difference between proportions 
D)  alternate inferential statistic 
A)  unweighted means analysis 
B)  t test for independent samples 
C)  z test for the difference between proportions 
D)  alternate inferential statistic

Question 9

The two types of errors that must be considered when making many unplanned comparisons are:

Accepted Answer

A)  Type I and Type II errors. 
B)  beta and theta errors. 
C)  per-comparison and family wise errors. 
D)  systematic and random errors. 
A)  Type I and Type II errors. 
B)  beta and theta errors. 
C)  per-comparison and family wise errors. 
D)  systematic and random errors.

Question 10

What is the power of a statistical test? What factors affect it and how?

Accepted Answer

The power of a statistical test refers t

Question 11

When an experiment includes more than two groups, the statistical test of choice is the:

Accepted Answer

A)  z test for the difference between proportions. 
B)  analysis of variance (ANOV
A) . 
C)  t test for correlated samples. 
D)  linear regression analysis. 
A)  z test for the difference between proportions. 
B)  analysis of variance (ANOV
A) . 
C)  t test for correlated samples. 
D)  linear regression analysis.

Question 12

Statistics that assess the reliability of your findings are called _____ statistics.

Accepted Answer

A)  descriptive 
B)  inferential 
C)  evaluative 
D)  reliability 
A)  descriptive 
B)  inferential 
C)  evaluative 
D)  reliability

Question 13

The hypothesis that sample means are drawn from different populations is called the _____ hypothesis.

Accepted Answer

A)  alternative 
B)  nonequivalence 
C)  null 
D)  differential means 
A)  alternative 
B)  nonequivalence 
C)  null 
D)  differential means

Question 14

The within-subjects analysis of variance treats subjects as a factor in the analysis.

Accepted Answer

A) True 
 B)False

Question 15

You conduct a single-factor, matched-pairs experiment, but your data require a nonparametric statistical analysis. A good choice for analysis here is the:

Accepted Answer

A)  Mann-Whitney U test. 
B)  Wilcoxon signed ranks test. 
C)  t-test for correlated samples. 
D)  analysis of variance (ANOV
A) . 
A)  Mann-Whitney U test. 
B)  Wilcoxon signed ranks test. 
C)  t-test for correlated samples. 
D)  analysis of variance (ANOV
A) .

Question 16

If you want the average of 10 scores to equal 100, you can choose any numbers you want for 9 of the scores, but the 10th score will have to be whatever number will make the average of the scores equal 100. Thus, the _____ are 9.

Accepted Answer

A)  dependent variables 
B)  degrees of variability 
C)  degrees of freedom 
D)  independent variables 
A)  dependent variables 
B)  degrees of variability 
C)  degrees of freedom 
D)  independent variables

Question 17

Serious violations of the assumptions underlying parametric statistics do not significantly bias a statistical test.

Accepted Answer

A) True 
 B)False

Question 18

If your dependent variable were a dichotomous yes/no response, you could compare the proportion of subjects saying yes in the experimental group to the proportion saying yes in the control group by using the:

Accepted Answer

A)  z test for the difference between two proportions. 
B)  t test for correlated samples. 
C)  t test for independent samples. 
D)  t test for proportions. 
A)  z test for the difference between two proportions. 
B)  t test for correlated samples. 
C)  t test for independent samples. 
D)  t test for proportions.

Question 19

The Mann-Whitney U test is used:

Accepted Answer

A)  to analyze unequal sample sizes when the inequality was planned or reflects actual differences in a population. 
B)  when subjects are treated as a factor along with one's manipulated independent variables. 
C)  when the dependent variable is a dichotomous decision. 
D)  to evaluate the significance of a difference between two independent groups when the dependent variable is scaled on at least an ordinal scale. 
A)  to analyze unequal sample sizes when the inequality was planned or reflects actual differences in a population. 
B)  when subjects are treated as a factor along with one's manipulated independent variables. 
C)  when the dependent variable is a dichotomous decision. 
D)  to evaluate the significance of a difference between two independent groups when the dependent variable is scaled on at least an ordinal scale.

Question 20

F = between-groups variability/within-groups variability.

Accepted Answer

A) True 
 B)False

Probability pyramiding is not a problem when planned comparisons are used.

An estimate of the amount of variability in sample means expected across a series of samples is provided by the:

You have just completed an experiment in which different subjects were randomly assigned to an experimental and a control group. Your dependent variable was the number of errors made on a memory test. The most appropriate parametric statistic for your data is the:

A statistically significant effect always has practical significance.

Draw a graph showing an interaction between two variables in a two-factor design. Would you still be interested in interpreting the main effects? Why or why not?

A one-tailed test should be used only if you can specify the direction of an effect before conducting your experiment.

The Latin square analysis of variance is used to:

If one ends up with unequal sample sizes for reasons unrelated to the effects of one's treatments, one could use a(n) _____ that involves a minor correction to the analysis of variance (ANOVA).

The two types of errors that must be considered when making many unplanned comparisons are:

What is the power of a statistical test? What factors affect it and how?

When an experiment includes more than two groups, the statistical test of choice is the:

Statistics that assess the reliability of your findings are called _____ statistics.

The hypothesis that sample means are drawn from different populations is called the _____ hypothesis.

The within-subjects analysis of variance treats subjects as a factor in the analysis.

You conduct a single-factor, matched-pairs experiment, but your data require a nonparametric statistical analysis. A good choice for analysis here is the:

If you want the average of 10 scores to equal 100, you can choose any numbers you want for 9 of the scores, but the 10^th score will have to be whatever number will make the average of the scores equal 100. Thus, the _____ are 9.

Serious violations of the assumptions underlying parametric statistics do not significantly bias a statistical test.

If your dependent variable were a dichotomous yes/no response, you could compare the proportion of subjects saying yes in the experimental group to the proportion saying yes in the control group by using the:

The Mann-Whitney U test is used:

F = between-groups variability/within-groups variability.

Explaining Behavior

Developing and Evaluating Theories of Behavior

Getting Ideas for Research

Choosing a Research Design

Making Systematic Observations

Choosing and Using Research Subjects

Understanding Ethical Issues in the Research Process

Doing Nonexperimental Research

Doing Survey Research

Using Between-Subjects and Within-Subjects Experimental Designs

Using Specialized Research Designs

Using Single-Subject Designs

Describing Data

Using Multivariate Design and Analysis

Reporting Your Research Results

Filters

Exam 14: Using Inferential Statistics

Probability pyramiding is not a problem when planned comparisons are used.

An estimate of the amount of variability in sample means expected across a series of samples is provided by the:

You have just completed an experiment in which different subjects were randomly assigned to an experimental and a control group. Your dependent variable was the number of errors made on a memory test. The most appropriate parametric statistic for your data is the:

A statistically significant effect always has practical significance.

Draw a graph showing an interaction between two variables in a two-factor design. Would you still be interested in interpreting the main effects? Why or why not?

A one-tailed test should be used only if you can specify the direction of an effect before conducting your experiment.

The Latin square analysis of variance is used to:

If one ends up with unequal sample sizes for reasons unrelated to the effects of one's treatments, one could use a(n) _____ that involves a minor correction to the analysis of variance (ANOVA).

The two types of errors that must be considered when making many unplanned comparisons are:

What is the power of a statistical test? What factors affect it and how?

When an experiment includes more than two groups, the statistical test of choice is the:

Statistics that assess the reliability of your findings are called _____ statistics.

The hypothesis that sample means are drawn from different populations is called the _____ hypothesis.

The within-subjects analysis of variance treats subjects as a factor in the analysis.

You conduct a single-factor, matched-pairs experiment, but your data require a nonparametric statistical analysis. A good choice for analysis here is the:

If you want the average of 10 scores to equal 100, you can choose any numbers you want for 9 of the scores, but the 10th score will have to be whatever number will make the average of the scores equal 100. Thus, the _____ are 9.

Serious violations of the assumptions underlying parametric statistics do not significantly bias a statistical test.

If your dependent variable were a dichotomous yes/no response, you could compare the proportion of subjects saying yes in the experimental group to the proportion saying yes in the control group by using the:

The Mann-Whitney U test is used:

F = between-groups variability/within-groups variability.

Explaining Behavior

Developing and Evaluating Theories of Behavior

Getting Ideas for Research

Choosing a Research Design

Making Systematic Observations

Choosing and Using Research Subjects

Understanding Ethical Issues in the Research Process

Doing Nonexperimental Research

Doing Survey Research

Using Between-Subjects and Within-Subjects Experimental Designs

Using Specialized Research Designs

Using Single-Subject Designs

Describing Data

Using Multivariate Design and Analysis

Reporting Your Research Results

Filters

If you want the average of 10 scores to equal 100, you can choose any numbers you want for 9 of the scores, but the 10^th score will have to be whatever number will make the average of the scores equal 100. Thus, the _____ are 9.