Question 1

If the null hypothesis of an experiment is true

Accepted Answer

A)  The means of each of the conditions would be essentially the same 
B)  The variance of each of the conditions will differ from each other 
C)  The means of the conditions will differ from each other 
D)  The variability of the groups will correspond to the variability of the population 
A)  The means of each of the conditions would be essentially the same 
B)  The variance of each of the conditions will differ from each other 
C)  The means of the conditions will differ from each other 
D)  The variability of the groups will correspond to the variability of the population

Question 2

If the variability between conditions is larger than the variability within conditions,

Accepted Answer

A)  The F-ratio will be 1 
B)  The F-ratio will be greater than 1 
C)  The experiment not statistically significant 
D)  At least two groups are significantly different from each other 
A)  The F-ratio will be 1 
B)  The F-ratio will be greater than 1 
C)  The experiment not statistically significant 
D)  At least two groups are significantly different from each other

Question 3

The ________ statistic tests whether the means of more than two groups are equal

Accepted Answer

A)  Chi-Square 
B)  ANOVA 
C)  t-test 
D)  Correlation 
A)  Chi-Square 
B)  ANOVA 
C)  t-test 
D)  Correlation

Question 4

The distribution of means of samples from a population is called

Accepted Answer

A)  The variance 
B)  The standard deviation 
C)  The standard error of the mean 
D)  The sampling distribution 
A)  The variance 
B)  The standard deviation 
C)  The standard error of the mean 
D)  The sampling distribution

Question 5

If you believe that social pain is reduced more in people who have taken acetaminophen than people who have not,

Accepted Answer

A)  You cannot test your hypothesis 
B)  You should use a two-tailed hypothesis test 
C)  You have a directional hypothesis 
D)  You have a non-directional hypothesis 
A)  You cannot test your hypothesis 
B)  You should use a two-tailed hypothesis test 
C)  You have a directional hypothesis 
D)  You have a non-directional hypothesis

Question 6

If you have made a mistake in your interpretation of your experiment and accept the null hypothesis when it is actually false, you have

Accepted Answer

A)  Made a type I error 
B)  Made a type II error 
C)  Made a type III error 
D)  Applied alpha incorrectly 
A)  Made a type I error 
B)  Made a type II error 
C)  Made a type III error 
D)  Applied alpha incorrectly

Question 7

The standard deviation of the sampling distribution is called the

Accepted Answer

A)  Mean 
B)  Variance 
C)  Standard error of the mean 
D)  Reliability estimate 
A)  Mean 
B)  Variance 
C)  Standard error of the mean 
D)  Reliability estimate

Question 8

Inferential statistics

Accepted Answer

A)  Mainly serve to describe data 
B)  Are best used with skewed data 
C)  Allow us to draw inferences about the population from a sample 
D)  Allow us to draw inferences about samples from the population 
A)  Mainly serve to describe data 
B)  Are best used with skewed data 
C)  Allow us to draw inferences about the population from a sample 
D)  Allow us to draw inferences about samples from the population

Question 9

A __________ is a quantity calculated from a ____________

Accepted Answer

A)  Statistic; sample 
B)  Parameter; sample 
C)  Statistic; population 
D)  Datum; sample 
A)  Statistic; sample 
B)  Parameter; sample 
C)  Statistic; population 
D)  Datum; sample

Question 10

When you want to analyze an experiment with two conditions in which categorical data has been collected _______ is appropriate.

Accepted Answer

A)  A Chi-Square 
B)  A t-test 
C)  A reliability index 
D)  An ANOVA 
A)  A Chi-Square 
B)  A t-test 
C)  A reliability index 
D)  An ANOVA

Question 11

If our research hypothesis is that people who take acetaminophen will experience a reduction in social pain, the statistical hypothesis is

Accepted Answer

A)  The alternative hypothesis 
B)  The null hypothesis 
C)  A mathematical prediction of the effect of acetaminophen 
D)  Both a and b 
A)  The alternative hypothesis 
B)  The null hypothesis 
C)  A mathematical prediction of the effect of acetaminophen 
D)  Both a and b

Question 12

The smaller the standard error of the mean,

Accepted Answer

A)  The larger the square root of the sample size 
B)  The smaller the square root of the sample size 
C)  The more difficult it is to calculate the standard deviation 
D)  The more difficult it is to calculate the variance 
A)  The larger the square root of the sample size 
B)  The smaller the square root of the sample size 
C)  The more difficult it is to calculate the standard deviation 
D)  The more difficult it is to calculate the variance

Question 13

The probability of committing a Type I error is

Accepted Answer

A)  Equal to the standard error 
B)  The same as the probability of committing a Type II error 
C)  Usually a fairly large number 
D)  The same as alpha 
A)  Equal to the standard error 
B)  The same as the probability of committing a Type II error 
C)  Usually a fairly large number 
D)  The same as alpha

Question 14

If you have a correlation of 0.5 between two variables

Accepted Answer

A)  It is not significant 
B)  It is definitely significant 
C)  Its significance level depends on the number of observations 
D)  You need post-hoc testing to determine significance. 
A)  It is not significant 
B)  It is definitely significant 
C)  Its significance level depends on the number of observations 
D)  You need post-hoc testing to determine significance.

Question 15

The greater the difference between the observed frequency and the expected frequency,

Accepted Answer

A)  The higher probability of a Type I error 
B)  The larger the F-Statistic 
C)  The larger the Chi-square value 
D)  The higher the power of the experiment 
A)  The higher probability of a Type I error 
B)  The larger the F-Statistic 
C)  The larger the Chi-square value 
D)  The higher the power of the experiment

Question 16

A One-Way ANOVA means that

Accepted Answer

A)  You have a unidirectional hypothesis 
B)  There is only one independent variable in the study 
C)  Your data is more susceptible to Type l error 
D)  You have a between groups experiment 
A)  You have a unidirectional hypothesis 
B)  There is only one independent variable in the study 
C)  Your data is more susceptible to Type l error 
D)  You have a between groups experiment

Question 17

The variability in an experiment

Accepted Answer

A)  Can only occur between groups 
B)  Can only occur within the subjects in a group 
C)  Can occur both between groups and within the subjects of a group 
D)  Indicates that a sample has been improperly selected 
A)  Can only occur between groups 
B)  Can only occur within the subjects in a group 
C)  Can occur both between groups and within the subjects of a group 
D)  Indicates that a sample has been improperly selected

Question 18

If your experimental results show statistical significance

Accepted Answer

A)  The effect of the independent variable was large 
B)  Then your results show a low probability of occurring due to chance. 
C)  The null hypothesis must be accepted 
D)  There is no danger of a Type I error 
A)  The effect of the independent variable was large 
B)  Then your results show a low probability of occurring due to chance. 
C)  The null hypothesis must be accepted 
D)  There is no danger of a Type I error

Question 19

If you look at an ANOVA table and see the word "subjects" in one of the rows, you know

Accepted Answer

A)  That the experiment entailed a mixed-model design 
B)  That the variance between the subjects is represented there 
C)  That the experiment was a between-subjects design 
D)  That the experiment was a within-subjects design 
A)  That the experiment entailed a mixed-model design 
B)  That the variance between the subjects is represented there 
C)  That the experiment was a between-subjects design 
D)  That the experiment was a within-subjects design

Question 20

An experiment is conducted to investigate the effects of three different doses of a drug on reaction time. This experiment can be analyzed with

Accepted Answer

A)  A Chi-Square 
B)  An ANOVA 
C)  A t-test 
D)  A reliability index 
A)  A Chi-Square 
B)  An ANOVA 
C)  A t-test 
D)  A reliability index

If the null hypothesis of an experiment is true

If the variability between conditions is larger than the variability within conditions,

The ________ statistic tests whether the means of more than two groups are equal

The distribution of means of samples from a population is called

If you believe that social pain is reduced more in people who have taken acetaminophen than people who have not,

If you have made a mistake in your interpretation of your experiment and accept the null hypothesis when it is actually false, you have

The standard deviation of the sampling distribution is called the

Inferential statistics

A is a quantity calculated from a __

When you want to analyze an experiment with two conditions in which categorical data has been collected _______ is appropriate.

If our research hypothesis is that people who take acetaminophen will experience a reduction in social pain, the statistical hypothesis is

The smaller the standard error of the mean,

The probability of committing a Type I error is

If you have a correlation of 0.5 between two variables

The greater the difference between the observed frequency and the expected frequency,

A One-Way ANOVA means that

The variability in an experiment

If your experimental results show statistical significance

If you look at an ANOVA table and see the word "subjects" in one of the rows, you know

An experiment is conducted to investigate the effects of three different doses of a drug on reaction time. This experiment can be analyzed with

Psychology and Science

Developing a Research Question

Ethics in Research

Writing in Psychology

Variables

Validity

Control

Nonexperimental Research, Part I: Observational,

Nonexperimental Research, Part Ii

True Experiments, Part 1 Single-Factor Designs

True Experiments, Part 2 Factorial Designs

Single Subject Experiments

Quasi Experiments

Data Exploration, Part 1: Graphic and Descriptive Techniques

Epilogue Biases and Limitations of Experimental Psychology

Filters

Exam 15: Data Exploration, Part 2: Inferential Statistics

If the null hypothesis of an experiment is true

If the variability between conditions is larger than the variability within conditions,

The ________ statistic tests whether the means of more than two groups are equal

The distribution of means of samples from a population is called

If you believe that social pain is reduced more in people who have taken acetaminophen than people who have not,

If you have made a mistake in your interpretation of your experiment and accept the null hypothesis when it is actually false, you have

The standard deviation of the sampling distribution is called the

Inferential statistics

A __________ is a quantity calculated from a ____________

When you want to analyze an experiment with two conditions in which categorical data has been collected _______ is appropriate.

If our research hypothesis is that people who take acetaminophen will experience a reduction in social pain, the statistical hypothesis is

The smaller the standard error of the mean,

The probability of committing a Type I error is

If you have a correlation of 0.5 between two variables

The greater the difference between the observed frequency and the expected frequency,

A One-Way ANOVA means that

The variability in an experiment

If your experimental results show statistical significance

If you look at an ANOVA table and see the word "subjects" in one of the rows, you know

An experiment is conducted to investigate the effects of three different doses of a drug on reaction time. This experiment can be analyzed with

Psychology and Science

Developing a Research Question

Ethics in Research

Writing in Psychology

Variables

Validity

Control

Nonexperimental Research, Part I: Observational,

Nonexperimental Research, Part Ii

True Experiments, Part 1 Single-Factor Designs

True Experiments, Part 2 Factorial Designs

Single Subject Experiments

Quasi Experiments

Data Exploration, Part 1: Graphic and Descriptive Techniques

Epilogue Biases and Limitations of Experimental Psychology

Filters

A is a quantity calculated from a __