Question 1

If the result of a study is deemed statistically significant, it has practical significance and thus real-world application.

Accepted Answer

A) True 
 B)False

Question 2

If the null hypothesis is rejected:

Accepted Answer

A)  the research hypothesis is rejected 
B)  the research hypothesis is accepted 
C)  the research results cannot be interpreted 
D)  the research hypothesis is proven 
A)  the research hypothesis is rejected 
B)  the research hypothesis is accepted 
C)  the research results cannot be interpreted 
D)  the research hypothesis is proven

Question 3

The purpose of inferential statistics is:

Accepted Answer

A)  to describe the results of a study 
B)  to test whether results support the research hypothesis 
C)  to permit inferences from sample results to a population 
D)  to verify the accuracy of descriptive statistics 
A)  to describe the results of a study 
B)  to test whether results support the research hypothesis 
C)  to permit inferences from sample results to a population 
D)  to verify the accuracy of descriptive statistics

Question 4

A sampling distribution is:

Accepted Answer

A)  a distribution of scores in a sample 
B)  a frequency polygon made from sample values 
C)  a frequency distribution of population values 
D)  a frequency polygon based on all the scores in a population 
A)  a distribution of scores in a sample 
B)  a frequency polygon made from sample values 
C)  a frequency distribution of population values 
D)  a frequency polygon based on all the scores in a population

Question 5

The magnitude of sampling error of a mean depends on:

Accepted Answer

A)  the size of the sample mean and the sample size 
B)  sample size and sample spread 
C)  sample spread and the magnitude of the mean 
D)  the size of the population mean and sample size 
A)  the size of the sample mean and the sample size 
B)  sample size and sample spread 
C)  sample spread and the magnitude of the mean 
D)  the size of the population mean and sample size

Question 6

A disadvantage of nonparametric inference tests is that they:

Accepted Answer

A)  are less likely to show statistical significance than parametric tests 
B)  require more assumptions than parametric tests 
C)  require more valid data than parametric tests 
D)  are harder to calculate than parametric tests 
A)  are less likely to show statistical significance than parametric tests 
B)  require more assumptions than parametric tests 
C)  require more valid data than parametric tests 
D)  are harder to calculate than parametric tests

Question 7

The purpose of a confidence interval is to:

Accepted Answer

A)  determine whether a relationship is of practical importance 
B)  assess the validity of scores 
C)  determine the range of sample scores 
D)  establish boundaries of population parameters 
A)  determine whether a relationship is of practical importance 
B)  assess the validity of scores 
C)  determine the range of sample scores 
D)  establish boundaries of population parameters

Question 8

If p <.10, the researcher will be:

Accepted Answer

A)  wrong in rejecting the null hypothesis 10 times in 100 
B)  wrong in accepting the null hypothesis 10 times in 100 
C)  right in rejecting the null hypothesis 10 times in 100 
D)  right in accepting the null hypothesis 10 times in 100 
A)  wrong in rejecting the null hypothesis 10 times in 100 
B)  wrong in accepting the null hypothesis 10 times in 100 
C)  right in rejecting the null hypothesis 10 times in 100 
D)  right in accepting the null hypothesis 10 times in 100

Question 9

Null hypotheses are used in statistics because:

Accepted Answer

A)  use of other types of hypotheses shows that the researcher is biased 
B)  they are more easily understood than other types of hypotheses 
C)  they are required by the logic of tests of statistical significance 
D)  they simplify computations 
A)  use of other types of hypotheses shows that the researcher is biased 
B)  they are more easily understood than other types of hypotheses 
C)  they are required by the logic of tests of statistical significance 
D)  they simplify computations

Question 10

The magnitude of Chi-Square depends on the:

Accepted Answer

A)  number of degrees of freedom 
B)  size of the sample 
C)  total number of categories 
D)  differences between observed and expected frequencies 
A)  number of degrees of freedom 
B)  size of the sample 
C)  total number of categories 
D)  differences between observed and expected frequencies

Question 11

Which of the following inference tests is appropriate for a comparison of means in an experiment in which each subject receives both treatments?

Accepted Answer

A)  The Mann-Whitney U test 
B)  Chi-Square 
C)  A t test for correlated means 
D)  A t test for independent means 
A)  The Mann-Whitney U test 
B)  Chi-Square 
C)  A t test for correlated means 
D)  A t test for independent means

Question 12

Matching
-Confidence intervals

Accepted Answer

A)  Null hypothesis testing 
B)  Mean, median, and mode 
C)  Relative occurrence 
D)  ANOVA 
E)  Boundaries 
A)  Null hypothesis testing 
B)  Mean, median, and mode 
C)  Relative occurrence 
D)  ANOVA 
E)  Boundaries

If the result of a study is deemed statistically significant, it has practical significance and thus real-world application.

If the null hypothesis is rejected:

The purpose of inferential statistics is:

A sampling distribution is:

The magnitude of sampling error of a mean depends on:

A disadvantage of nonparametric inference tests is that they:

The purpose of a confidence interval is to:

If p <.10, the researcher will be:

Null hypotheses are used in statistics because:

The magnitude of Chi-Square depends on the:

Which of the following inference tests is appropriate for a comparison of means in an experiment in which each subject receives both treatments?

Matching -Confidence intervals

The Nature of Research

The Research Problem

Locating and Reviewing the Literature

Ethics and Research

Variables and Hypotheses

Sampling

Instrumentation

Validity and Reliability

Internal Validity

Descriptive Statistics

Statistics in Perspective

Experimental Research

Single-Subject Research

Correlational Research

Causal-Comparative Research

Survey Research

The Nature of Qualitative Research

Observation and Interviewing

Content Analysis

Ethnographic Research

Historical Research

Mixed-Methods Research

Action Research

Preparing Research Proposals and Reports

Filters

Exam 11: Inferential Statistics

If the result of a study is deemed statistically significant, it has practical significance and thus real-world application.

If the null hypothesis is rejected:

The purpose of inferential statistics is:

A sampling distribution is:

The magnitude of sampling error of a mean depends on:

A disadvantage of nonparametric inference tests is that they:

The purpose of a confidence interval is to:

If p <.10, the researcher will be:

Null hypotheses are used in statistics because:

The magnitude of Chi-Square depends on the:

Which of the following inference tests is appropriate for a comparison of means in an experiment in which each subject receives both treatments?

Matching -Confidence intervals

The Nature of Research

The Research Problem

Locating and Reviewing the Literature

Ethics and Research

Variables and Hypotheses

Sampling

Instrumentation

Validity and Reliability

Internal Validity

Descriptive Statistics

Statistics in Perspective

Experimental Research

Single-Subject Research

Correlational Research

Causal-Comparative Research

Survey Research

The Nature of Qualitative Research

Observation and Interviewing

Content Analysis

Ethnographic Research

Historical Research

Mixed-Methods Research

Action Research

Preparing Research Proposals and Reports

Filters