Question 1

Factor loadings can range from:

Accepted Answer

A)  0 to 1 
B)  -1.00 to +1.00 
C)  -100 to +100 
D)  there is no set range 
A)  0 to 1 
B)  -1.00 to +1.00 
C)  -100 to +100 
D)  there is no set range

Question 2

The precision with which a sample average approximates a population average increases as the ______ of the sample ________.

Accepted Answer

A)  standard error; increases 
B)  normal distribution; increases 
C)  central tendency; increases 
D)  standard error; decreases 
A)  standard error; increases 
B)  normal distribution; increases 
C)  central tendency; increases 
D)  standard error; decreases

Question 3

In which case will your standard error tend to be smallest?

Accepted Answer

A)  your sample size is 4 
B)  your sample size is 10 
C)  your sample size is 16 
D)  your sample size is 40 
A)  your sample size is 4 
B)  your sample size is 10 
C)  your sample size is 16 
D)  your sample size is 40

Question 4

If you have ordinal data, you can use

Accepted Answer

A)  a Chi Square 
B)  the Pearson r 
C)  the dependent groups t test 
D)  analysis of variance 
A)  a Chi Square 
B)  the Pearson r 
C)  the dependent groups t test 
D)  analysis of variance

Question 5

If you have a normal distribution, 95% of the scores will be within ___ standard deviations of the mean.

Accepted Answer

A)  1 
B)  2 
C)  3 
D)  4 
A)  1 
B)  2 
C)  3 
D)  4

Question 6

In which case will your standard error tend to be smallest?

Accepted Answer

A)  your standard deviation is 1 
B)  your standard deviation is 5 
C)  your standard deviation is 10 
D)  your standard deviation is 50 
A)  your standard deviation is 1 
B)  your standard deviation is 5 
C)  your standard deviation is 10 
D)  your standard deviation is 50

Question 7

A Pearson r is more likely to be statistically significant if

Accepted Answer

A)  if the sample size is large 
B)  if the Pearson r is large 
C)  both a and b 
D)  neither a nor b 
A)  if the sample size is large 
B)  if the Pearson r is large 
C)  both a and b 
D)  neither a nor b

Question 8

The difference between two groups is 10, the standard deviation is 4, the standard error is 2, and the standard error of the difference is 5. The t value is

Accepted Answer

A)  10 
B)  5 
C)  2.5 
D)  2 
A)  10 
B)  5 
C)  2.5 
D)  2

Question 9

Which of the following is not an assumption of the between-subjects analysis of variance

Accepted Answer

A)  observations are assumed to be dependent 
B)  all of the groups are assumed to have the same variance 
C)  all scores are assumed to be at least interval 
D)  the scores within each group are normally distributed 
A)  observations are assumed to be dependent 
B)  all of the groups are assumed to have the same variance 
C)  all scores are assumed to be at least interval 
D)  the scores within each group are normally distributed

Question 10

If the critical value in the t table is 4.0 and your t is -5.0, then

Accepted Answer

A)  your groups are significantly different 
B)  your groups are not significantly different 
C)  you have strong support for the null hypothesis 
D)  you can't draw any conclusions 
A)  your groups are significantly different 
B)  your groups are not significantly different 
C)  you have strong support for the null hypothesis 
D)  you can't draw any conclusions

Question 11

If you have 9 participants and 3 groups, your df error would be

Accepted Answer

A)  9 
B)  6 
C)  3 
D)  2 
A)  9 
B)  6 
C)  3 
D)  2

Question 12

According to the central limit theorem,

Accepted Answer

A)  the standard deviation will always be smaller than the standard error 
B)  the standard deviation will always be larger than the standard error 
C)  the distribution of sample means will be normally distributed if your sample sizes are large enough 
D)  the distribution of sample means will be normally distributed if the underlying population is normally distributed 
A)  the standard deviation will always be smaller than the standard error 
B)  the standard deviation will always be larger than the standard error 
C)  the distribution of sample means will be normally distributed if your sample sizes are large enough 
D)  the distribution of sample means will be normally distributed if the underlying population is normally distributed

Question 13

A valid item should have a factor loading of at least

Accepted Answer

A)  .2 
B)  .3 
C)  .4 
D)  .5 
A)  .2 
B)  .3 
C)  .4 
D)  .5

Question 14

The average of the experimental group is

Accepted Answer

A)  equal to the control group mean, if the null hypothesis is true 
B)  greater than the control group mean, if the null hypothesis is true 
C)  probably within one standard error of the control group mean, if the null hypothesis is true 
D)  greater than the control group mean, if the null hypothesis is false 
A)  equal to the control group mean, if the null hypothesis is true 
B)  greater than the control group mean, if the null hypothesis is true 
C)  probably within one standard error of the control group mean, if the null hypothesis is true 
D)  greater than the control group mean, if the null hypothesis is false

Question 15

Many frequency distributions

Accepted Answer

A)  precisely coincide with the normal curve 
B)  approximate the normal curve 
C)  define the normal curve 
D)  verify the normal curve 
A)  precisely coincide with the normal curve 
B)  approximate the normal curve 
C)  define the normal curve 
D)  verify the normal curve

Question 16

If your experiment involves 100 participants, the degrees of freedom for your independent groups t test will be

Accepted Answer

A)  97 
B)  98 
C)  99 
D)  100 
A)  97 
B)  98 
C)  99 
D)  100

Question 17

If you have a normal distribution and a standard deviation of 2, 95% of the scores will be within ___ points of the mean.

Accepted Answer

A)  2 
B)  4 
C)  6 
D)  8 
A)  2 
B)  4 
C)  6 
D)  8

Question 18

Approximately 68 percent of the cases represented by the normal curve fall within ________ standard deviation(s) from the mean.

Accepted Answer

A)  1 
B)  2 
C)  34 
D)  68 
A)  1 
B)  2 
C)  34 
D)  68

Question 19

You may be able to use an independent groups t test when

Accepted Answer

A)  you have three or more groups 
B)  your observations are dependent 
C)  your scores are ordinal 
D)  your groups' variances are not equal 
A)  you have three or more groups 
B)  your observations are dependent 
C)  your scores are ordinal 
D)  your groups' variances are not equal

Question 20

A within-subjects design compares one group of participants with another group.

Accepted Answer

A) True 
 B)False

Factor loadings can range from:

The precision with which a sample average approximates a population average increases as the of the sample __.

In which case will your standard error tend to be smallest?

If you have ordinal data, you can use

If you have a normal distribution, 95% of the scores will be within ___ standard deviations of the mean.

In which case will your standard error tend to be smallest?

A Pearson r is more likely to be statistically significant if

The difference between two groups is 10, the standard deviation is 4, the standard error is 2, and the standard error of the difference is 5. The t value is

Which of the following is not an assumption of the between-subjects analysis of variance

If the critical value in the t table is 4.0 and your t is -5.0, then

If you have 9 participants and 3 groups, your df error would be

According to the central limit theorem,

A valid item should have a factor loading of at least

The average of the experimental group is

Many frequency distributions

If your experiment involves 100 participants, the degrees of freedom for your independent groups t test will be

If you have a normal distribution and a standard deviation of 2, 95% of the scores will be within ___ points of the mean.

Approximately 68 percent of the cases represented by the normal curve fall within ________ standard deviation(s) from the mean.

You may be able to use an independent groups t test when

A within-subjects design compares one group of participants with another group.

Psychology, Science, and You

Ethics and Validity

Generating Research Hypotheses

Reading and Evaluating Research

Measuring and Manipulating Variables: Reliability and Validity

Choosing the Best Measure for Your Study

Introduction to Descriptive Methods

Survey Research

Internal Validity

The Simple Experiment

Expanding the Simple Experiment: The Multiple Group Experiment

Expanding the Simple Experiment: Factorial Designs

Within-Subjects Designs

Single-N Experiments and Quasi-Experiments

Writing Research Proposals and Reports

Filters

Exam 16: Appendix E: Using Theory to Generate Research Hypotheses

Factor loadings can range from:

The precision with which a sample average approximates a population average increases as the ______ of the sample ________.

In which case will your standard error tend to be smallest?

If you have ordinal data, you can use

If you have a normal distribution, 95% of the scores will be within ___ standard deviations of the mean.

In which case will your standard error tend to be smallest?

A Pearson r is more likely to be statistically significant if

The difference between two groups is 10, the standard deviation is 4, the standard error is 2, and the standard error of the difference is 5. The t value is

Which of the following is not an assumption of the between-subjects analysis of variance

If the critical value in the t table is 4.0 and your t is -5.0, then

If you have 9 participants and 3 groups, your df error would be

According to the central limit theorem,

A valid item should have a factor loading of at least

The average of the experimental group is

Many frequency distributions

If your experiment involves 100 participants, the degrees of freedom for your independent groups t test will be

If you have a normal distribution and a standard deviation of 2, 95% of the scores will be within ___ points of the mean.

Approximately 68 percent of the cases represented by the normal curve fall within ________ standard deviation(s) from the mean.

You may be able to use an independent groups t test when

A within-subjects design compares one group of participants with another group.

Psychology, Science, and You

Ethics and Validity

Generating Research Hypotheses

Reading and Evaluating Research

Measuring and Manipulating Variables: Reliability and Validity

Choosing the Best Measure for Your Study

Introduction to Descriptive Methods

Survey Research

Internal Validity

The Simple Experiment

Expanding the Simple Experiment: The Multiple Group Experiment

Expanding the Simple Experiment: Factorial Designs

Within-Subjects Designs

Single-N Experiments and Quasi-Experiments

Writing Research Proposals and Reports

Filters

The precision with which a sample average approximates a population average increases as the of the sample __.