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Be sure to refer to Gravetter and Wallnau as this application includes t-tests, ANOVAs, correlation, and regression, in addition to descriptive statistics.

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Instructions

Open “Week7_RSM801” data in SPSS.

About these data: Roy Baumeister and his colleagues study self-regulation. In other words, they ask why don’t we eat all of the tasty tidbits we encounter, attend parties when we should be studying, and have sex with every attractive potential partner who crosses our path? In short, how do we manage to forgo temptation? An exploration of (fictitious) data regarding these questions will comprise the bulk of the final lab exam.

SUBJECT

Unique subject identifier from 1-800

PERSONALITY

Personality Type (0 = Introvert; 1 = Extrovert)

CTRL_PER

Persistence after watching a sad movie and being asked to control emotions (1-10 scale; higher numbers indicate greater persistence).

NO_CTRL_PER

Persistence after watching a sad movie and NOT being asked to control emotions (1-10 scale; higher numbers indicate greater persistence).

NEED_CTRL

Self-report of need for control in the environment, measured two months before participating in the study (1-5 scale; higher numbers indicate greater need for control over one’s environment)

JOB

First job or activity following college graduation (0 = Public service job; 1 = Graduate school; 2 = Travel; 3 = Private sector job)

Create a new variable that represents the z-score of persistence on the brain teasers after being asked to control emotions (CTRL_PER). Analyze whether persistence on the brain teasers after being asked to control emotions contains any outliers. Write up your conclusion (using stats and a figure to back up your conclusions). Report what you would do if you do find any outliers (delete, remove, transform), but leave the variable as is. 6 points

Is self-reported need to control one’s environment associated with persistence scores when participants did not control their emotions after watching a sad move (variable NO_CTRL_PER)? The following questions are worth a total of 8 points.What is the appropriate test to conduct to answer this question?

Conduct the appropriate test to answer this question. Paste your output in your Word document.

Write your results in APA format as if you were writing them in a journal article.

Do introverts and extroverts differ in their need to control their environment? The following questions are worth a total of 8 points.

What test do you want to perform to answer this question?

Conduct the test you indicated in Part A. Paste your output into your Word document.

Write your results in APA format as if you were reporting them in a journal article.

(4 points)

Create a frequency table in SPSS that shows how many students plan to pursue each job or activity following graduation. Paste into your Word document.

What percent of people plan to travel following graduation?

Does persistence after watching a sad movie and being asked to control emotions vary depending on job plans?The following questions are worth a total of 8 points.

What test do you want to perform to answer this question?

Conduct the test you indicated in part A. Paste your output into your Word document.

Include a figure and describe what you see.

Write your results as if you were reporting them in a journal article.

Is “Need for control” approximately normally distributed? 2 point

___ Yes ___ No

What evidence do you have to support this conclusion? 2 points

Report the following for scores on “Need for Control:” 3 points

Mean ________

Median ________

Mode ________

Variance ________

N ________

A group of psychologists was interested in what kind of humor people find funny. They randomly assigned people to read about different types of humor (knock knock jokes, puns, sarcasm, or practical jokes) and rate how funny each joke, comment, or situation was. Ratings were made on 1 (not at all funny) to 10 (extremely funny) scales. They then conducted a one-way ANOVA with a Tukey post-hoc test to see if there were differences in average ratings of humor across the four different groups. SPSS output is below.

Describe these results in plain English – be sure to be thorough and complete in your answer, and to indicate what information you are using to draw your conclusion. That is, what can you conclude about the four groups (knock knock, pun, saracasm, and practical joke) in terms of humor ratings? Write per APA guidelines. 4 points

An industrial psychologist was hired by a company to determine whether gender and work location impacted confidence. The results of this study are presented in the figure below. 8 points

What test of statistical test was performed? You should base your answer on the study description as well as the figure above.

Number and label the figure per APA guidelines.

Write hypotheses for the impact of gender and work location on confidence.

Describe the results of the study based on what you see in the figure.

A researcher is interested in whether age, years of experience, or confidence predict certification exam scores. 12 points

What statistical test would you recommend?

Using the output below, what was the best predictor of exam scores: age, years of experience, or confidence? Use statistics to back up your answer.

Were there any other variables that improved the ability to predict performance on the certification exam? Use statistics to back up your answer.

Were there any other variables that did not predict performance on the certification exam?

What is the best model? Write up the results of the overall test per APA guidelines.

Using the coefficients table, write up an equation and explain what this means.

What type of figure would you want to see to help interpret this data?

Descriptive Statistics

Mean

Std. Deviation

N

Certification Exam

69.65

10.667

60

Age

37.38

8.988

60

Years of Experience

5.87

4.436

60

Confidence

21.43

5.518

60

Correlations

Certification Exam

Age

Years of Experience

Confidence

Pearson Correlation

Certification Exam

1.000

.610

.444

.596

Age

.610

1.000

.639

.426

Years of Experience

.444

.639

1.000

.448

Confidence

.596

.426

.448

1.000

Sig. (1-tailed)

Certification Exam

.

.000

.000

.000

Age

.000

.

.000

.000

Years of Experience

.000

.000

.

.000

Confidence

.000

.000

.000

.

N

Certification Exam

60

60

60

60

Age

60

60

60

60

Years of Experience

60

60

60

60

Confidence

60

60

60

60

Variables Entered/Removeda

Model

Variables Entered

Variables Removed

Method

1

Age

.

Stepwise (Criteria: Probability-of-F-to-enter <= .050, Probability-of-F-to-remove >= .100).

2

Confidence

.

Stepwise (Criteria: Probability-of-F-to-enter <= .050, Probability-of-F-to-remove >= .100).

a. Dependent Variable: Certification Exam

Model Summaryc

Model

R

R Square

Adjusted R Square

Std. Error of the Estimate

1

.610a

.372

.361

8.525

2

.714b

.510

.493

7.595

a. Predictors: (Constant), Age

b. Predictors: (Constant), Age, Confidence

c. Dependent Variable: Certification Exam

ANOVAc

Model

Sum of Squares

Df

Mean Square

F

Sig.

1

Regression

2498.802

1

2498.802

34.386

.000a

Residual

4214.848

58

72.670

Total

6713.650

59

2

Regression

3426.044

2

1713.022

29.700

.000b

Residual

3287.606

57

57.677

Total

6713.650

59

a. Predictors: (Constant), Age

b. Predictors: (Constant), Age, Confidence

c. Dependent Variable: Certification Exam

Coefficientsa

Model

Unstandardized Coefficients

Standardized Coefficients

B

Std. Error

Beta

t

Sig.

1

(Constant)

42.582

4.745

8.973

.000

Age

.724

.123

.610

5.864

.000

2

(Constant)

33.324

4.817

6.918

.000

Age

.517

.122

.435

4.248

.000

Confidence

.794

.198

.411

4.010

.000

a. Dependent Variable: Certification Exam

Excluded Variablesc

Model

Collinearity Statistics

Beta In

t

Sig.

Partial Correlation

Tolerance

1

Years of Experience

.092a

.677

.501

.089

.592

Confidence

.411a

4.010

.000

.469

.819

2

Years of Experience

-.032b

-.254

.800

-.034

.554

a. Predictors in the Model: (Constant), Age

b. Predictors in the Model: (Constant), Age, Confidence

c. Dependent Variable: Certification Exam How is a moderation effect expressed statistically? That is, how does the moderator impact the relationship between the independent and dependent variable? 2 pointsAccording to the Baron and Kenny model, how is a partial mediation expressed? 2 points

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