Question 1

What does the t test for dependent samples allow you to examine?

Accepted Answer

A t test for independent samples allows you to examine the difference between the means of two groups that are related in some way. For example, you can examine the means from a pretest and posttest for a group of students.

Question 2

Given the following, what should you conclude? t???? = 2.001 and tc??t?c?l = 1.94

Accepted Answer

Conclusion: Reject the null hypothesis and accept the research hypothesis.

Question 3

How many observations are there for each case in a t test for dependent samples?

Accepted Answer

A)  One 
B)  Two 
C)  Three 
D)  Four 
A)  One 
B)  Two 
C)  Three 
D)  Four B

Question 4

What is another name for a dependent samples t test?

Accepted Answer

A)  Paired sample 
B)  Two sample 
C)  Independent sample 
D)  Freed sample 
A)  Paired sample 
B)  Two sample 
C)  Independent sample 
D)  Freed sample

Question 5

What does the Excel function TTEST compute?

Accepted Answer

A)  t value 
B)  Probability of the t value occurring 
C)  Critical t value 
D)  Obtained t value 
A)  t value 
B)  Probability of the t value occurring 
C)  Critical t value 
D)  Obtained t value

Question 6

Explain the difference between a test of dependent and independent means.

Accepted Answer

A test for	dependent means tes

Question 7

In order to be 99% confident you have not committed a Type I error, at what level should you set your p value?

Accepted Answer

A)  .01 
B)  .10 
C)  .05 
D)  .15 
A)  .01 
B)  .10 
C)  .05 
D)  .15

Question 8

Consider the following set of conditions: The focus is the difference between scores on a pretest and a posttest, the participants are being tested more than once, and there are two groups. Which test should you use?

Accepted Answer

Under these conditio

Question 9

If the obtained value is less than the critical value, what should you do?

Accepted Answer

A)  Reject the null hypothesis 
B)  Accept the null hypothesis 
C)  Reduce the p value 
D)  Decrease your sample 
A)  Reject the null hypothesis 
B)  Accept the null hypothesis 
C)  Reduce the p value 
D)  Decrease your sample

Question 10

In the formula that computes a t value, what does n?D represent?

Accepted Answer

A)  Sum of the difference between groups 
B)  Sum of the means for Group 1 
C)  Sum of the means for Group 2 
D)  Sum of the differences squared 
A)  Sum of the difference between groups 
B)  Sum of the means for Group 1 
C)  Sum of the means for Group 2 
D)  Sum of the differences squared

Question 11

In the following, what are the degrees of freedom: t???? = 2.001, p < .05?

Accepted Answer

A)  29 
B)  30 
C)  31 
D)  32 
A)  29 
B)  30 
C)  31 
D)  32

Question 12

In a t test for dependent samples that examines the difference between a pretest and posttest, what type of hypothesis is used?

Accepted Answer

A)  Nondirectional 
B)  Directional 
C)  Null 
D)  Research 
A)  Nondirectional 
B)  Directional 
C)  Null 
D)  Research

Question 13

What does t critical one-tail represent?

Accepted Answer

The crucial value on

Question 14

What does P(T<=t) two-tail represent?

Accepted Answer

The probability of t

Question 15

What is the formula used to calculate degrees of freedom for a t test for dependent groups?

Accepted Answer

A)  n₁ - 1 
B)  n₁ + n₂ - 1 
C)  n₁ - 1 + n₂ 
D)  n₁ + n₂ 
A)  n₁ - 1 
B)  n₁ + n₂ - 1 
C)  n₁ - 1 + n₂ 
D)  n₁ + n₂

Question 16

Which of the following represents degrees of freedom?

Accepted Answer

A)  fd 
B)  df 
C)  d 
D)  f 
A)  fd 
B)  df 
C)  d 
D)  f

Question 17

To compute the test statistic or t value you must first approximate the sample size through calculating the?

Accepted Answer

A)  Pooled variance 
B)  Standard deviation 
C)  Degrees of freedom 
D)  Mean score 
A)  Pooled variance 
B)  Standard deviation 
C)  Degrees of freedom 
D)  Mean score

Question 18

Which of the following relates to the difference you expect?

Accepted Answer

A)  Hypothesized mean diff. 
B)  Pearson correlation 
C)  Observations 
D)  Variance 
A)  Hypothesized mean diff. 
B)  Pearson correlation 
C)  Observations 
D)  Variance

Question 19

What Excel function requires that you enter the t value, degrees of freedom, and the number of tails?

Accepted Answer

A)  TTEST 
B)  TEST2 
C)  TDIST 
D)  TDIST2 
A)  TTEST 
B)  TEST2 
C)  TDIST 
D)  TDIST2

Question 20

What is the test statistic calculated by the statistical procedure selected known as?

Accepted Answer

A)  Critical value 
B)  Significance level 
C)  Obtained value 
D)  p value 
A)  Critical value 
B)  Significance level 
C)  Obtained value 
D)  p value

What does the t test for dependent samples allow you to examine?

Given the following, what should you conclude? t???? = 2.001 and tc??t?c?l = 1.94

How many observations are there for each case in a t test for dependent samples?

What is another name for a dependent samples t test?

What does the Excel function TTEST compute?

Explain the difference between a test of dependent and independent means.

In order to be 99% confident you have not committed a Type I error, at what level should you set your p value?

Consider the following set of conditions: The focus is the difference between scores on a pretest and a posttest, the participants are being tested more than once, and there are two groups. Which test should you use?

If the obtained value is less than the critical value, what should you do?

In the formula that computes a t value, what does n?D represent?

In the following, what are the degrees of freedom: t???? = 2.001, p < .05?

In a t test for dependent samples that examines the difference between a pretest and posttest, what type of hypothesis is used?

What does t critical one-tail represent?

What does P(T<=t) two-tail represent?

What is the formula used to calculate degrees of freedom for a t test for dependent groups?

Which of the following represents degrees of freedom?

To compute the test statistic or t value you must first approximate the sample size through calculating the?

Which of the following relates to the difference you expect?

What Excel function requires that you enter the t value, degrees of freedom, and the number of tails?

What is the test statistic calculated by the statistical procedure selected known as?

Statistics or Sadistics? It’s Up to You

Means to an End: Computing and Understanding Averages

Vive La Différence: Understanding Variability

A Picture Really Is Worth a Thousand Words

Ice Cream and Crime: Computing Correlation Coefficients

Just the Truth: An Introduction to Understanding Reliability and Validity

Hypotheticals and You: Testing Your Questions

Are Your Curves Normal? Probability and Why It Counts

Significantly Significant: What It Means for You and Me

Only the Lonely

t(ea) for Two (Again): Tests Between the Means of Related Groups

Two Groups Too Many? Try Analysis of Variance

Two Too Many Factors: Factorial Analysis of Variance

Cousins or Just Good Friends? Testing Relationships Using the Correlation Coefficient

Predicting Who’ll Win the Super Bowl: Using Linear Regression

What to Do When You’re Not Normal: Chi-Square and Some Other Nonparametric Tests

Some Other (Important) Statistical Procedures You Should Know About

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Exam 12: t(ea) for Two (Again): Tests Between the Means of Related Groups

What does the t test for dependent samples allow you to examine?

Given the following, what should you conclude? t???? = 2.001 and tc??t?c?l = 1.94

How many observations are there for each case in a t test for dependent samples?

What is another name for a dependent samples t test?

What does the Excel function TTEST compute?

Explain the difference between a test of dependent and independent means.

In order to be 99% confident you have not committed a Type I error, at what level should you set your p value?

Consider the following set of conditions: The focus is the difference between scores on a pretest and a posttest, the participants are being tested more than once, and there are two groups. Which test should you use?

If the obtained value is less than the critical value, what should you do?

In the formula that computes a t value, what does n?D represent?

In the following, what are the degrees of freedom: t???? = 2.001, p < .05?

In a t test for dependent samples that examines the difference between a pretest and posttest, what type of hypothesis is used?

What does t critical one-tail represent?

What does P(T<=t) two-tail represent?

What is the formula used to calculate degrees of freedom for a t test for dependent groups?

Which of the following represents degrees of freedom?

To compute the test statistic or t value you must first approximate the sample size through calculating the?

Which of the following relates to the difference you expect?

What Excel function requires that you enter the t value, degrees of freedom, and the number of tails?

What is the test statistic calculated by the statistical procedure selected known as?

Statistics or Sadistics? It’s Up to You

Means to an End: Computing and Understanding Averages

Vive La Différence: Understanding Variability

A Picture Really Is Worth a Thousand Words

Ice Cream and Crime: Computing Correlation Coefficients

Just the Truth: An Introduction to Understanding Reliability and Validity

Hypotheticals and You: Testing Your Questions

Are Your Curves Normal? Probability and Why It Counts

Significantly Significant: What It Means for You and Me

Only the Lonely

t(ea) for Two (Again): Tests Between the Means of Related Groups

Two Groups Too Many? Try Analysis of Variance

Two Too Many Factors: Factorial Analysis of Variance

Cousins or Just Good Friends? Testing Relationships Using the Correlation Coefficient

Predicting Who’ll Win the Super Bowl: Using Linear Regression

What to Do When You’re Not Normal: Chi-Square and Some Other Nonparametric Tests

Some Other (Important) Statistical Procedures You Should Know About

Filters