Problem: What information do you need to decide on a sample size that will provide adequate statistical power?

Problem: What is multicollinearity in multiple regression, and why is it a problem?

Problem: Factorial Analysis of Variance

What information do you need to judge the statistical significance and the effect size for each of these sources of variance: A, B, and A x B ?

Problem: Suppose that in past studies of the interaction between sex and crowding as predictors of hostility, the R ² for the main effects-only model was .20 and the R ² for a model that included main effects and a sex-by-crowding interaction was .30. Suppose further that you plan to use = .05 as the criterion for statistical significance, you hope to have power of .80, and the assumptions for regression (e.g., multivariate normality) are met. What sample size should give you the desired level of statistical power in this situation?

Report and Power Point Presentation

Retrieve two quantitative research articles from the literature focused on the same area of interest and investigation.

For each of the two articles summarize and succinctly discuss the following points separately using the following subheadings: (20 points)

Problem Statement

Research Hypotheses

Independent /Dependent Variables

Levels of Data Employed in the Study Hypotheses

Research Design

Sampling Technique

Statistical Procedure (Analysis of Data)

Reason for Statistical Procedure

Strengths of the Study

Weaknesses of the Study

Compare and contrast the two studies relative to research design and statistical procedures utilized. (5 points)

Generate an original study using pieces of the two studies you have analyzed or discussing why you would not use the components of the previous studies and succinctly discuss the ten areas listed in #2 above. (10 points)

Present your original study using a power point presentation. (5 points).

Price: $20.14

Solution: The downloadable solution consists of 8 pages, 1214 words.
Deliverable: Word Document