Question 1

If s 12 = 10, s 22 = 15, and s 32 = 12, and n 1 = n 2 = n 3 , then MSwithin equals _________.

Accepted Answer

A)  cannot be determined from information given 
B)  37.0 
C)  12.33 
D)  3.51 
A)  cannot be determined from information given 
B)  37.0 
C)  12.33 
D)  3.51

Question 2

If k = 2 and t obt = 2.95, what would the value of F obt be for an independent groups design?

Accepted Answer

A)  2.95 
B)  8.70 
C)  1.72 
D)  0.05 
A)  2.95 
B)  8.70 
C)  1.72 
D)  0.05

Question 3

Eight cities were asked to report data on fatalities in auto crashes. The Department of Safety wanted to know if safety devices have an effect on mortality. The department received the following data on the number of fatalities per every 100 crashes where the vehicle was traveling over 40 m.p.h. The type of safety device was also reported. If the data were as follows, answer the questions below. 
a. What is the value of SS between ? 
b. What is the value of ? 
c. What is the value of F obt ? 
d. Would you reject H0 , using a = 0.01?

Accepted Answer

To provide a full answer to the input qu

Question 4

For this problem consider the following information from an experiment to compare differences between the length of time a house paint lasts before it begins to fade. The number of subjects are the same in each group.   , , , The value of t obt for the planned comparison of and is _________.

Accepted Answer

A)  4.96 
B)  5.82 
C)  3.24 
D)  2.29 
A)  4.96 
B)  5.82 
C)  3.24 
D)  2.29

Question 5

Define F test.

Accepted Answer

The F-test is a statistical test used to

Question 6

A clinical psychologist is interested in comparing the effectiveness of short term relaxation and cognitive-behavioral therapy in treating mild depression. An experiment is conducted in which 15 patients with mild depression are randomly selected and assigned 5 each to a relaxation therapy group, a cognitive/behavioral therapy group, and an attention placebo group. Therapy is administered until the patient is judged no longer depressed or until 10 treatment sessions have elapsed. The following data is obtained. Scores are the number of sessions for each patient.   Doing planned comparisons, using a = 0.05, the critical value is _________.

Accepted Answer

A)  ± 2.179 
B)  - 1.782 
C)  ±2.681 
D)  2.145 
A)  ± 2.179 
B)  - 1.782 
C)  ±2.681 
D)  2.145

Question 7

MSbetween + MSwithin = MStotal .

Accepted Answer

A) True 
 B)False

Question 8

Which of the following is(are) illegal values for F obt?

Accepted Answer

A)  1.00 
B)  0.96 
C)  - 2.97 
D)  b and c 
A)  1.00 
B)  0.96 
C)  - 2.97 
D)  b and c

Question 9

A clinical psychologist is interested in comparing the effectiveness of short term relaxation and cognitive-behavioral therapy in treating mild depression. An experiment is conducted in which 15 patients with mild depression are randomly selected and assigned 5 each to a relaxation therapy group, a cognitive/behavioral therapy group, and an attention placebo group. Therapy is administered until the patient is judged no longer depressed or until 10 treatment sessions have elapsed. The following data is obtained. Scores are the number of sessions for each patient.   Using the HSD test with a = .05, what is your conclusion?

Accepted Answer

A)  retain H 0 ; we cannot conclude the two therapies differ in effectiveness 
B)  reject H 0 ; the two therapies appear to differ in effectiveness 
C)  retain H 0 ; the two therapies have the same effectiveness 
D)  reject H 0 ; the two therapies are not significantly different 
A)  retain H 0 ; we cannot conclude the two therapies differ in effectiveness 
B)  reject H 0 ; the two therapies appear to differ in effectiveness 
C)  retain H 0 ; the two therapies have the same effectiveness 
D)  reject H 0 ; the two therapies are not significantly different

Question 10

Which of the following is (are) assumption(s) underlying the use of the F test?

Accepted Answer

A)  the raw score populations are normally distributed 
B)  the variances of the raw score populations are the same 
C)  the mean of the populations differ 
D)  the raw score populations are normally distributed and the variances of the raw score populations are the same 
E)  all of these 
A)  the raw score populations are normally distributed 
B)  the variances of the raw score populations are the same 
C)  the mean of the populations differ 
D)  the raw score populations are normally distributed and the variances of the raw score populations are the same 
E)  all of these

Question 11

The analysis of variance is a nondirectional technique and yet it uses a one-tailed evaluation. Is this statement correct? If so, how can you explain this apparent contradiction?

Accepted Answer

The statement that "the analysis of vari

Question 12

F 2 = t .

Accepted Answer

A) True 
 B)False

Question 13

A clinical psychologist is interested in comparing the effectiveness of short term relaxation and cognitive-behavioral therapy in treating mild depression. An experiment is conducted in which 15 patients with mild depression are randomly selected and assigned 5 each to a relaxation therapy group, a cognitive/behavioral therapy group, and an attention placebo group. Therapy is administered until the patient is judged no longer depressed or until 10 treatment sessions have elapsed. The following data is obtained. Scores are the number of sessions for each patient.   Using a = 0.05, what do you conclude?

Accepted Answer

A)  reject H 0 ; there is no difference among the treatments 
B)  reject H 0 ; at least one of the treatments differs from at least one of the others 
C)  retain H 0 ; we cannot conclude that there is a difference among the treatments 
D)  accept H 0 ; we cannot conclude that there is a difference among the treatments 
A)  reject H 0 ; there is no difference among the treatments 
B)  reject H 0 ; at least one of the treatments differs from at least one of the others 
C)  retain H 0 ; we cannot conclude that there is a difference among the treatments 
D)  accept H 0 ; we cannot conclude that there is a difference among the treatments

Question 14

A clinical psychologist is interested in comparing the effectiveness of short term relaxation and cognitive-behavioral therapy in treating mild depression. An experiment is conducted in which 15 patients with mild depression are randomly selected and assigned 5 each to a relaxation therapy group, a cognitive/behavioral therapy group, and an attention placebo group. Therapy is administered until the patient is judged no longer depressed or until 10 treatment sessions have elapsed. The following data is obtained. Scores are the number of sessions for each patient.   Using a = .05, what do you conclude?

Accepted Answer

A)  retain H 0 ; we cannot conclude the two therapies differ in effectiveness 
B)  reject H 0 ; the two therapies appear to differ in effectiveness 
C)  retain H 0 ; the two therapies have the same effectiveness 
D)  reject H 0 ; the two therapies are not significantly different 
E)  a and c 
A)  retain H 0 ; we cannot conclude the two therapies differ in effectiveness 
B)  reject H 0 ; the two therapies appear to differ in effectiveness 
C)  retain H 0 ; the two therapies have the same effectiveness 
D)  reject H 0 ; the two therapies are not significantly different 
E)  a and c

Question 15

Define Tukey HSD test.

Accepted Answer

The Tukey HSD (Honest Significant Differ

Question 16

The Scheffé test allows doing post hoc trend analysis.

Accepted Answer

A) True 
 B)False

Question 17

The Scheffé test allows only post-hoc testing of group mean differences.

Accepted Answer

A) True 
 B)False

Question 18

The parameter being estimated in the analysis of variance is the ________.

Accepted Answer

A)  sample mean 
B)  variance of the H 0 populations 
C)  sample variance 
D)  mean of the H 0 populations 
E)  F obt 
A)  sample mean 
B)  variance of the H 0 populations 
C)  sample variance 
D)  mean of the H 0 populations 
E)  F obt

Question 19

Define F crit.

Accepted Answer

The input "Define F _crit" appears to be a st

Question 20

The sum of df within and df between equals N - 1.

Accepted Answer

A) True 
 B)False

If s 12 = 10, s 22 = 15, and s 32 = 12, and n 1 = n 2 = n 3 , then MS_within equals _________.

If k = 2 and t _obt = 2.95, what would the value of F _obt be for an independent groups design?

For this problem consider the following information from an experiment to compare differences between the length of time a house paint lasts before it begins to fade. The number of subjects are the same in each group. , , , The value of t _obt for the planned comparison of and is _________.

Define F test.

MS_between + MS_within = MS_total .

Which of the following is(are) illegal values for F _obt?

Which of the following is (are) assumption(s) underlying the use of the F test?

The analysis of variance is a nondirectional technique and yet it uses a one-tailed evaluation. Is this statement correct? If so, how can you explain this apparent contradiction?

F 2 = t .

Define Tukey HSD test.

The Scheffé test allows doing post hoc trend analysis.

The Scheffé test allows only post-hoc testing of group mean differences.

The parameter being estimated in the analysis of variance is the ________.

Define F _crit.

The sum of df within and df between equals N - 1.

Statistics and Scientific Method

Basic Mathematical and Measurement Concepts

Frequency Distributions

Measures of Central Tendency and Variability

The Normal Curve and Standard Scores

Correlation

Linear Regression

Random Sampling and Probability

Binomial Distribution

Introduction to Hypothesis Testing: Using the Sign Test

Power

Sampling Distributions, Sampling Distribution of the Mean: the Normal Deviate Z Test

Students T Test for Single Samples

Students T Test for Correlated and Independent Groups

Introduction to the Two-Way Analysis of Variance

Chi-Square and Other Nonparametric Tests

Filters

Exam 15: Introduction to the Analysis of Variance

If s 12 = 10, s 22 = 15, and s 32 = 12, and n 1 = n 2 = n 3 , then MSwithin equals _________.

If k = 2 and t obt = 2.95, what would the value of F obt be for an independent groups design?

For this problem consider the following information from an experiment to compare differences between the length of time a house paint lasts before it begins to fade. The number of subjects are the same in each group. , , , The value of t obt for the planned comparison of and is _________.

Define F test.

MSbetween + MSwithin = MStotal .

Which of the following is(are) illegal values for F obt?

Which of the following is (are) assumption(s) underlying the use of the F test?

The analysis of variance is a nondirectional technique and yet it uses a one-tailed evaluation. Is this statement correct? If so, how can you explain this apparent contradiction?

F 2 = t .

Define Tukey HSD test.

The Scheffé test allows doing post hoc trend analysis.

The Scheffé test allows only post-hoc testing of group mean differences.

The parameter being estimated in the analysis of variance is the ________.

Define F crit.

The sum of df within and df between equals N - 1.

Statistics and Scientific Method

Basic Mathematical and Measurement Concepts

Frequency Distributions

Measures of Central Tendency and Variability

The Normal Curve and Standard Scores

Correlation

Linear Regression

Random Sampling and Probability

Binomial Distribution

Introduction to Hypothesis Testing: Using the Sign Test

Power

Sampling Distributions, Sampling Distribution of the Mean: the Normal Deviate Z Test

Students T Test for Single Samples

Students T Test for Correlated and Independent Groups

Introduction to the Two-Way Analysis of Variance

Chi-Square and Other Nonparametric Tests

Filters

If s 12 = 10, s 22 = 15, and s 32 = 12, and n 1 = n 2 = n 3 , then MS_within equals _________.

If k = 2 and t _obt = 2.95, what would the value of F _obt be for an independent groups design?

For this problem consider the following information from an experiment to compare differences between the length of time a house paint lasts before it begins to fade. The number of subjects are the same in each group. , , , The value of t _obt for the planned comparison of and is _________.

MS_between + MS_within = MS_total .

Which of the following is(are) illegal values for F _obt?

Define F _crit.