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

In order to compute the test statistic or t value, you must first approximate the sample size through calculating which of the following?

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 C

Question 3

To determine whether you will reject the null hypothesis, the test statistic must be compared against the:

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 B

Question 4

What is the formula for calculating a t value for a dependent samples test?

Accepted Answer

The answer of What is the formula for calculating a...

Question 5

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

Accepted Answer

A)  Reject the null hypothesis 
B)  Accept the null hypothesis 
C)  Set a higher p value 
D)  Increase your sample 
A)  Reject the null hypothesis 
B)  Accept the null hypothesis 
C)  Set a higher p value 
D)  Increase your sample

Question 6

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

Accepted Answer

The probability of t

Question 7

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 8

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 9

What does t stat represent?

Accepted Answer

The value

Question 10

Given the following, what should you conclude? t(24) = 2.001 and tcritical = 1.94

Accepted Answer

Conclusion: Reject t

Question 11

How many subjects were examined based on the following: 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 examine 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 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 14

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

Question 15

What is another term that statisticians use when talking of dependent tests? Explain.

Accepted Answer

Statisticians talk of dependent tests as

Question 16

Which of the following relates to the difference you expect?

Accepted Answer

A)  Hypothesized mean difference 
B)  Pearson correlation 
C)  Observations 
D)  Variance 
A)  Hypothesized mean difference 
B)  Pearson correlation 
C)  Observations 
D)  Variance

Question 17

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 18

Examining one group of subjects under two different conditions would require what statistical technique?

Accepted Answer

A)  Regression 
B)  t test for dependent samples 
C)  Analysis of variance 
D)  t test for independent samples 
A)  Regression 
B)  t test for dependent samples 
C)  Analysis of variance 
D)  t test for independent samples

Question 19

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 20

When comparing two groups the term independent explains that:

Accepted Answer

A)  One group is compared to other similar groups 
B)  One group is compared to dissimilar groups 
C)  Two groups are related 
D)  Two groups are not related in any way 
A)  One group is compared to other similar groups 
B)  One group is compared to dissimilar groups 
C)  Two groups are related 
D)  Two groups are not related in any way

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

In order to compute the test statistic or t value, you must first approximate the sample size through calculating which of the following?

To determine whether you will reject the null hypothesis, the test statistic must be compared against the:

What is the formula for calculating a t value for a dependent samples test?

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

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

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?

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

What does t stat represent?

Given the following, what should you conclude? t₍₂₄₎ = 2.001 and t_critical = 1.94

How many subjects were examined based on the following: t???? = 2.001, p < .05?

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

What is another name for a dependent samples t test?

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

What is another term that statisticians use when talking of dependent tests? Explain.

Which of the following relates to the difference you expect?

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

Examining one group of subjects under two different conditions would require what statistical technique?

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

When comparing two groups the term independent explains that:

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

Exam 11: t(ea) for Two (Again): Tests Between the Means of Related Groups

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

In order to compute the test statistic or t value, you must first approximate the sample size through calculating which of the following?

To determine whether you will reject the null hypothesis, the test statistic must be compared against the:

What is the formula for calculating a t value for a dependent samples test?

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

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

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?

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

What does t stat represent?

Given the following, what should you conclude? t(24) = 2.001 and tcritical = 1.94

How many subjects were examined based on the following: t???? = 2.001, p < .05?

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

What is another name for a dependent samples t test?

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

What is another term that statisticians use when talking of dependent tests? Explain.

Which of the following relates to the difference you expect?

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

Examining one group of subjects under two different conditions would require what statistical technique?

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

When comparing two groups the term independent explains that:

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

Given the following, what should you conclude? t₍₂₄₎ = 2.001 and t_critical = 1.94