PSY 520 SPSS Assignment 2

I need help with this:

An Overview of the Data Set

.

Here is some more information about the variables in this hypothetical data set:

• Number: Participant's ID number
• Sound:The type of background music participants heard while taking the test; 1 = rock, 2 = classical, and 3 = white noise
• Experience: Participants who had taken three or more college math courses were classified as being high in math experience, whereas participants who had taken fewer than three were classified as being low; 1 = high and 2 = low
• Anxiety:Anxiety during the test, with possible scores ranging from 0 to 50; higher scores indicate higher levels of anxiety
• Performance: Performance on the general math test, with possible scores ranging from 0 to 100; higher scores indicate better performance on the test

Questions

1) Describe in your own words what type of research situations call for a researcher to use an ANOVA analysis.

[Insert your answer.]

2a) Use the Compare Means function (select Analyze, select Compare Means and Proportions, and then select Means) to compare the means of the three Soundconditions on Anxiety and Performance.

[Paste your output.]

2b) Based on these results, on which variable does it appear most likely that significant differences might exist based on the Sound condition?

[Insert your answer.]

3a) Conduct a one-way ANOVA on both Anxiety and Performance using Soundas the independent variable. That is, conduct two separate one-way ANOVAs, one with Anxietyas the dependent variable and one with Performance as the dependent variable.

[Paste your output.]

3b) Based on these results, were either of your ANOVAs significant? How can you tell? Use a cutoff level of 0.05 for your decision.

[Insert your answer.]

4a) Remember that in a one-way ANOVA, we are only looking at the impact of one variable on the dependent variable. Factorial ANOVAs, on the other hand, assess the impact of multiple independent variables. Conduct a factorial ANOVA on Performance using both Soundand Experience as independent variables. Be sure to choose the option to view the estimated marginal means (by selecting "EM Means" instead of "Options") for all of your main effects and interactions. This choice will allow you to easily interpret the results.

[Paste your output for Test of Between-Subjects Effects only.]

4b) Write the results of the ANOVA. For help, refer to the "How to Present the Results of a Two-Way ANOVA" section of the webpage, Two-Way ANOVA: Examples and When to Use It.

[Insert your answer.]

DATA:

1.00 1.00 1.00 45.00 70.00 3.00 1.00 1.00 41.00 65.00 4.00 1.00 1.00 32.00 71.00 5.00 1.00 1.00 28.00 67.00 6.00 1.00 1.00 43.00 69.00 9.00 1.00 1.00 26.00 62.00 14.00 2.00 1.00 43.00 65.00 15.00 2.00 1.00 29.00 69.00 16.00 2.00 1.00 35.00 75.00 17.00 2.00 1.00 32.00 57.00 20.00 2.00 1.00 35.00 72.00 22.00 2.00 1.00 29.00 82.00 23.00 2.00 1.00 41.00 71.00 32.00 3.00 1.00 29.00 66.00 33.00 3.00 1.00 33.00 85.00 34.00 3.00 1.00 36.00 66.00 35.00 3.00 1.00 37.00 61.00 36.00 3.00 1.00 32.00 60.00 40.00 3.00 1.00 32.00 71.00 2.00 1.00 2.00 26.00 48.00 7.00 1.00 2.00 46.00 55.00 8.00 1.00 2.00 40.00 55.00 10.00 1.00 2.00 31.00 53.00 11.00 1.00 2.00 40.00 58.00 12.00 1.00 2.00 42.00 54.00 13.00 1.00 2.00 35.00 53.00 18.00 2.00 2.00 37.00 63.00 19.00 2.00 2.00 36.00 59.00 21.00 2.00 2.00 41.00 63.00 24.00 2.00 2.00 44.00 63.00 25.00 2.00 2.00 35.00 75.00 26.00 2.00 2.00 36.00 71.00 27.00 2.00 2.00 38.00 63.00 28.00 3.00 2.00 44.00 48.00 29.00 3.00 2.00 44.00 53.00 30.00 3.00 2.00 32.00 55.00 31.00 3.00 2.00 44.00 47.00 37.00 3.00 2.00 39.00 53.00 38.00 3.00 2.00 40.00 51.00 39.00 3.00 2.00 43.00 57.00 41.00 3.00 2.00 43.00 55.00