Concepts: Choosing the appropriate statistic, generating a research hypothesis, hypothesis testing, data analysis in SPSS, statistical significance, writing results

Choose one of the data sets provided. See the description of each data set.

Familiarize yourself with the data set. Determine your independent and dependent variables, their scales of measurement, and your null and research hypotheses. You will use this information to justify the ideal analysis and the analysis that you ultimately choose to run.

Describe the ideal analysis. You might come up with ideas for analysis that are beyond what you’ve learned in this class (e.g., ANOVA and multiple regression; you know what these are, but you don’t have the background to run, interpret and report on these analyses).

Decide on a type of analysis you will run (t-test, ANOVA, correlation & regression, or chi-square)

Complete the analyses in SPSS

Go into SPSS and generate appropriate descriptive statistics. For example, frequency distributions for each variable, and measures of central tendency, variability, and correlations among variables, if applicable.

Use SPSS to test the null hypothesis. Include measures of effect size and any post hoc tests as needed, depending on your data and the analyses chosen.

Save the output as <YOURNAMEPROJECT2. SPV> and upload

Determine if you should reject the null hypothesis or not.

Write Up. Submit a 2-3 page (12-font) description of the Analysis including this content:

Provide a rationale for the analysis that you chose.

State the assumptions required for the analysis.

Report the results using APA style (see examples from class lectures). Include descriptive statistics and the hypothesis test.

Briefly discuss if your results are significant or not as well as the size of the treatment effect.

PSYCH 381: Project 2 Rubric

Completely missing

0 Incorrect, or poorly conducted

1-2

Minimally adequate

3-4

Good

5-6

Very good

7-8

Excellent

9-10

Accurate determination of independent, and dependent variables

Accurate scales of measurement

Null and Research hypotheses are logically

correct and clearly stated

Rationale for data analysis is correct

Appropriate descriptive statistics are examined

and reported

Hypothesis test is done correctly

Effect size is determined (also post hoc tests if applicable) and reported

Statistical assumptions are accurate

Write up is comprehensive, but not repetitive, and adheres to APA style

Write-up is clear and well written