Question 1

Which of the following is an example of paired data?

Accepted Answer

A)  large and small organizations 
B)  high performing and low performing employees 
C)  male trainees and female trainees 
D)  none of these 
A)  large and small organizations 
B)  high performing and low performing employees 
C)  male trainees and female trainees 
D)  none of these

Question 2

Which of the following is most likely what µD represents?

Accepted Answer

A)  µtime2 - µtime1 
B)  µtime2 + µtime1 
C)  µtime2 * µtime1 
D)  none of these 
A)  µtime2 - µtime1 
B)  µtime2 + µtime1 
C)  µtime2 * µtime1 
D)  none of these

Question 3

Which of the following is an example of appropriate for an independent samples test?

Accepted Answer

A)  employees from Branch A and employees from Branch B 
B)  employees pre- and post-training 
C)  sales in 2000 and sales in 2008 
D)  all of these 
A)  employees from Branch A and employees from Branch B 
B)  employees pre- and post-training 
C)  sales in 2000 and sales in 2008 
D)  all of these

Question 4

A variable where 0 and 1 are used to indicate group membership is a called an affiliation variable.

Accepted Answer

A) True 
 B)False

Question 5

You collect a sample of twenty pairs of yearly sales in 2000 and 2005. You hypothesize that yearly sales have decreased between 2000 and 2005. If D = -99.6 and sD = 160.60, what is the critical value of t if F1F1F1S1F1F1F10 = .05?

Accepted Answer

A)  -1.729 
B)  -2.093 
C)  1.725 
D)  1.086 
A)  -1.729 
B)  -2.093 
C)  1.725 
D)  1.086

Question 6

Repeated measures data always has exactly two time points

Accepted Answer

A) True 
 B)False

Question 7

The samples in paired samples t-tests are ______ whereas the samples in independent samples t-tests are ______ .

Accepted Answer

A)  related, related 
B)  related, unrelated 
C)  unrelated, related 
D)  unrelated, unrelated 
A)  related, related 
B)  related, unrelated 
C)  unrelated, related 
D)  unrelated, unrelated

Question 8

For an independent samples t-test, describes how you know which direction to subtract the group means.

Accepted Answer

There is no single correct direction to

Question 9

The paired samples t-test and the independent samples t-test are similar in that they both ______.

Accepted Answer

A)  examine t by dividing a mean difference by a standard error 
B)  require an estimate of the standard error 
C)  compare two conditions 
D)  all of these 
A)  examine t by dividing a mean difference by a standard error 
B)  require an estimate of the standard error 
C)  compare two conditions 
D)  all of these

Question 10

The only difference in the formula for the sample standard error of the difference and the sample standard error of the mean is the use of sD instead of s.

Accepted Answer

A) True 
 B)False

Question 11

is the standard error used in a paired samples t-test.

Accepted Answer

A) True 
 B)False

Question 12

Which of the following is an example of repeated measures data?

Accepted Answer

A)  male trainees and female trainees 
B)  quick learners and slow learners 
C)  learning before and after training 
D)  none of these 
A)  male trainees and female trainees 
B)  quick learners and slow learners 
C)  learning before and after training 
D)  none of these

Question 13

µD is the mean of a population

Accepted Answer

A) True 
 B)False

Question 14

You collect a sample of twenty pairs of production counts per hour. You hypothesize that production counts per hour have increased between Time 1 and Time 2. If D = 15.15 and sD = 14.357375, what is the standardized effect size?

Accepted Answer

A)  15.15 
B)  4.72 
C)  1.06 
D)  3.21 
A)  15.15 
B)  4.72 
C)  1.06 
D)  3.21

Question 15

Two observations linked together by a study's research design can be considered ______.

Accepted Answer

A)  paired data 
B)  matched data 
C)  related data 
D)  all of these 
A)  paired data 
B)  matched data 
C)  related data 
D)  all of these

Question 16

In a two-tailed paired sample test, when n = 51, tcrit = ±2.009

Accepted Answer

A) True 
 B)False

Question 17

In an independent samples t-test, we assume that the variances in our populations are the same.

Accepted Answer

A) True 
 B)False

Question 18

Conceptually, how are the formulas for the independent samples t-test and the paired samples t-test similar? How are they different?

Accepted Answer

The formulas for the independent and pai

Question 19

The standard error of the mean difference is represented with ______.

Accepted Answer

A)  sD 
B)  x? 
C)  x? D 
D)  ${ }^{s_{D_{\bar{x}}}}$ 
A)  sD 
B)  x? 
C)  x? D 
D)  ${ }^{s_{D_{\bar{x}}}}$

Question 20

You collect satisfaction data from 5 clients of Company A and 5 clients of Company B. If x̄1 = 65.6 , x̄2 = 42.8, sp2 = 106.25, what is the standardized effect size?

Accepted Answer

A)  22.8 
B)  2.21 
C)  3.5 
D)  none of these 
A)  22.8 
B)  2.21 
C)  3.5 
D)  none of these

Which of the following is an example of paired data?

Which of the following is most likely what µ_D represents?

Which of the following is an example of appropriate for an independent samples test?

A variable where 0 and 1 are used to indicate group membership is a called an affiliation variable.

You collect a sample of twenty pairs of yearly sales in 2000 and 2005. You hypothesize that yearly sales have decreased between 2000 and 2005. If _D = -99.6 and s_D = 160.60, what is the critical value of t if  = .05?

Repeated measures data always has exactly two time points

The samples in paired samples t-tests are whereas the samples in independent samples t-tests are .

For an independent samples t-test, describes how you know which direction to subtract the group means.

The paired samples t-test and the independent samples t-test are similar in that they both ______.

The only difference in the formula for the sample standard error of the difference and the sample standard error of the mean is the use of s_D instead of s.

is the standard error used in a paired samples t-test.

Which of the following is an example of repeated measures data?

µ_D is the mean of a population

You collect a sample of twenty pairs of production counts per hour. You hypothesize that production counts per hour have increased between Time 1 and Time 2. If _D = 15.15 and s_D = 14.357375, what is the standardized effect size?

Two observations linked together by a study's research design can be considered ______.

In a two-tailed paired sample test, when n = 51, t_crit = ±2.009

In an independent samples t-test, we assume that the variances in our populations are the same.

Conceptually, how are the formulas for the independent samples t-test and the paired samples t-test similar? How are they different?

The standard error of the mean difference is represented with ______.

You collect satisfaction data from 5 clients of Company A and 5 clients of Company B. If x̄₁ = 65.6 , x̄₂ = 42.8, s_p² = 106.25, what is the standardized effect size?

The Language of Statistics

Working With Numbers and Data Display

Central Tendency and Variability

Probability Distributions

Sampling Distributions

Estimation and Confidence Intervals

Hypothesis Testing

Tests for Significance: Z-Tests and One-Sample T-Tests

Analysis of Variance Anova

CHI-Squared Tests of Fit

Correlation R and Regression Y BX A

Matching Statistical Tests to Business Problems

Filters

Exam 9: Tests for Significance: Paired and Independent-Samples T-Test

Which of the following is an example of paired data?

Which of the following is most likely what µD represents?

Which of the following is an example of appropriate for an independent samples test?

A variable where 0 and 1 are used to indicate group membership is a called an affiliation variable.

You collect a sample of twenty pairs of yearly sales in 2000 and 2005. You hypothesize that yearly sales have decreased between 2000 and 2005. If D = -99.6 and sD = 160.60, what is the critical value of t if  = .05?

Repeated measures data always has exactly two time points

The samples in paired samples t-tests are ______ whereas the samples in independent samples t-tests are ______ .

For an independent samples t-test, describes how you know which direction to subtract the group means.

The paired samples t-test and the independent samples t-test are similar in that they both ______.

The only difference in the formula for the sample standard error of the difference and the sample standard error of the mean is the use of sD instead of s.

is the standard error used in a paired samples t-test.

Which of the following is an example of repeated measures data?

µD is the mean of a population

You collect a sample of twenty pairs of production counts per hour. You hypothesize that production counts per hour have increased between Time 1 and Time 2. If D = 15.15 and sD = 14.357375, what is the standardized effect size?

Two observations linked together by a study's research design can be considered ______.

In a two-tailed paired sample test, when n = 51, tcrit = ±2.009

In an independent samples t-test, we assume that the variances in our populations are the same.

Conceptually, how are the formulas for the independent samples t-test and the paired samples t-test similar? How are they different?

The standard error of the mean difference is represented with ______.

You collect satisfaction data from 5 clients of Company A and 5 clients of Company B. If x̄1 = 65.6 , x̄2 = 42.8, sp2 = 106.25, what is the standardized effect size?

The Language of Statistics

Working With Numbers and Data Display

Central Tendency and Variability

Probability Distributions

Sampling Distributions

Estimation and Confidence Intervals

Hypothesis Testing

Tests for Significance: Z-Tests and One-Sample T-Tests

Analysis of Variance Anova

CHI-Squared Tests of Fit

Correlation R and Regression Y BX A

Matching Statistical Tests to Business Problems

Filters

Which of the following is most likely what µ_D represents?

You collect a sample of twenty pairs of yearly sales in 2000 and 2005. You hypothesize that yearly sales have decreased between 2000 and 2005. If _D = -99.6 and s_D = 160.60, what is the critical value of t if  = .05?

The samples in paired samples t-tests are whereas the samples in independent samples t-tests are .

The only difference in the formula for the sample standard error of the difference and the sample standard error of the mean is the use of s_D instead of s.

µ_D is the mean of a population

You collect a sample of twenty pairs of production counts per hour. You hypothesize that production counts per hour have increased between Time 1 and Time 2. If _D = 15.15 and s_D = 14.357375, what is the standardized effect size?

In a two-tailed paired sample test, when n = 51, t_crit = ±2.009

You collect satisfaction data from 5 clients of Company A and 5 clients of Company B. If x̄₁ = 65.6 , x̄₂ = 42.8, s_p² = 106.25, what is the standardized effect size?