Week 11 - Assignment

Statistics

Question 1

How does the denominator of the F-ratio (the error term) differ for a repeated-measures analysis of variance compared to an independent-measures ANOVA?

Question 14

The following summary table represents the results of an ANOVA from a repeated-measures experiment comparing four treatment conditions with a sample of n = 10 subjects. Fill in all missing values in the table.

Source SS df MS

Between treatments _30__ _3_ 10 F = 2.5__

Within treatments _120__ _36__

Between subjects 12 __9__

Error _108_ __27___ __4___

Total 150 __39___

Question 21

Most sports injuries are immediate and obvious, like a broken leg. However, some can be more subtle, like the neurological damage that may occur when soccer players repeatedly head a soccer ball. To examine long-term effects of repeated heading, Downs and Abwender (2002) examined two different age groups of soccer players and swimmers. The dependent variable was performance on a conceptual thinking task. Following are hypothetical data, similar to the research results.

1. Use a two-factor ANOVA with =.05 to evaluate the main effects and interaction.
2. Briefly describe the outcome of the study.

Factor B: Age

College Older

n =20 n = 20

Soccer M = 9 M = 4

T = 180 T = 80

SS = 380 SS = 390

Factor A: Sport ________________________

n = 20 n = 20

Swimming M = 9 M = 8

T = 180 T = 160

SS = 350 SS = 400

SPSS Assignment

Questions are often asked related to the issue of school size. A researcher in the Department of Education is interested to know if there are distinct regional patterns in school size, as measured by the number of classrooms. Using the SPSS data file frss79spec.sav (provided under the Doc Sharing ):

• State the null and alternative hypotheses for testing the question: Is there a significant difference among the northeast, southeast, central, and west regions on question 1, total number of rooms in the surveyed schools?
• Determine and conduct the appropriate statistical test. State the test you chose and why.
• Copy or copy object and paste the relevant SPSS analysis.
• State whether you accept or reject the null hypothesis based on the analysis, using appropriate conventions to present your conclusion.
• Briefly explain if there are differences between the four regions and whether they are significant or not.

Price: $15.1

Solution: The downloadable solution consists of 9 pages, 610 words and 5 charts.
Deliverable: Word Document