Question 1

Barker conducted his research on dogs at which workplace?

Accepted Answer

Barker conducted his research on dogs at Replacements Ltd., a company known for its pet-friendly workplace policies.

Question 2

Barker used which statistical technique in his research on dogs at work?

Accepted Answer

Barker used ANOVA (Analysis of Variance) in his research on dogs at work as he wanted to compare the means of multiple groups (different dog breeds) to determine if there was a significant difference in their job performance.

Question 3

Barker found that the employees who usually brought their dogs to work but during the period of his study left their dogs at home experienced:

Accepted Answer

Barker's study found that employees who left their dogs at home during the study experienced increasing stress levels throughout the day.

Question 4

The textbook suggests, in trimming down the t-test SPSS output, to delete which test results:

Accepted Answer

Levene's Test for Equality of Variances is not necessary to report, as it is only used to determine whether the assumption of equal variances has been violated. It does not provide any information about the actual test of means.

Question 5

The textbook suggests, when running an ANOVA, to ask SPSS to give you:

Accepted Answer

Asking for descriptives will give you information on the means, standard deviations, and sample sizes for each group, which is important for interpreting the ANOVA results. The other options are not relevant for ANOVA.

Question 6

A common belief is that gay men realize their same-sex attraction earlier in life than lesbian women do. In the 2008GSS, they asked those attracted to their same sex at which age they were first attracted, and here are the results:
 $\begin{array}{lcc} 
& \text { Men } & \text { Women } \
\text { Mean Age } & 16.82 & 18.92 \
\text { Standard Deviation } & 7.92 & 10.28 \
\text { Sample Size } & 28 & 46
\end{array}$ Run a t-test using these sample results and fully interpret your findings.

Accepted Answer

The answer of A common belief is that gay men...

Question 7

Catholics historically have been stereotyped as having a bar-going culture, more so than Protestants. Here are some statistics from GSS2008:
 $\begin{array}{lll} 
& \text { Catholics } & \text { Protestants } \
\text { Mean Times Per Month Go to a Bar } & 1.56 & 1.18 \
\text { Standard Deviation } & 4.02 & 3.35 \
\text { Sample Size } & 301 & 681
\end{array}$ So GSS2008 Catholics do go to bars more frequently than Protestants, but run a t-test to see if this is a significant difference.

Accepted Answer

The answer of Catholics historically have been stereotyped as having...

Question 8

Interested in whether having young children causes one to go the public library more often, we run a t-test using the following statistics:
 $\begin{array}{lcc} 
& \text { Don't Have Small Child } & \text { Have Small Child } \
\text { Mean \# time to library } & 9.57 & 11.89 \
\text { Standard Deviation } & 24.17 & 27.70  \
\text { Sample Size } & 1250 & 227
\end{array}$ This is not a statistically significant difference. Assuming all the other results remain the same, find the smallest possible mean difference that WOULD give you a statistically significant difference.

Accepted Answer

The answer of Interested in whether having young children causes...

Question 9

If our two variables are race and income, describe a research question that would lead you to use a t-test, and another research question that would lead you to use ANOVA.

Accepted Answer

The answer of If our two variables are race and...

Question 10

If our two variables are race (whites and blacks) and religiosity, describe a research question that would lead you to use a t-test, and another research question that would lead you to use chi-square.

Accepted Answer

The answer of If our two variables are race (whites...

Question 11

Explain both mathematically and conceptually, why having greater variation around the sample means in a t-test makes in more difficult to achieve statistical significance.

Accepted Answer

The answer of Explain both mathematically and conceptually, why having...

Question 12

With regard to ANOVA, describe the connections among the amount of variation in our samples, the within groups sum of squares, the F-value, and the p-value. Start your answer with the phrase: "As the variation in our samples increases…."

Accepted Answer

The answer of With regard to ANOVA, describe the connections...

Question 13

Explain how Willer uses t-tests to study the effects of gender threat. Among which group are there statistically significant differences?

Accepted Answer

The answer of Explain how Willer uses t-tests to study...

Question 14

In Abascal's study of race relations, one comparison of black allocators produced a statistically significant difference, while another comparison of black allocators did not. Describe each of these comparisons, and what Abascal says these findings imply about race relations.

Accepted Answer

The answer of In Abascal's study of race relations, one...

Question 15

In his study of dogs at work, why was Barker concerned that there might have been social desirability bias among his subjects? In your answer, be sure to be clear that you know what social desirability bias is.

Accepted Answer

The answer of In his study of dogs at work,...

Quiz 6: Using Multiple Sample Means to Talk About Populations: T-Tests and Anova