Discussion Post Assignments | Online Homework Help

Using the attached data (i.e., “job satisfaction” and “practice”), perform one analysis (i.e., Part A or B) using a dependent (or paired) samples t-test and the other (i.e., Part A or B) using the independent samples t-test. Determine appropriate test for each relationship, and then proceed with your analyses.  (To be clear, you are required to perform TWO t-tests in this submission.)

Part A

Thirty teachers at ACE Charter School were given a 20% raise in their salary in August of 2015. How was their job satisfaction (“0” = very unsatisfied to “50” = very satisfied) affected as a result? (Note: You can make causal inferences in this analysis.)

• What is the research question? (Use “difference” language as we are no longer talking about “relationship” among variables but differences between groups.)
• What is the null hypothesis?
• What is the research hypothesis? (Directional)
• Basic descriptive analysis appropriate for the variables used (e.g., mean, median, range, SD, etc.) in a paragraph form. (Don’t just include a number of SPSS tables and not talk about it.)
• State the rationale for applying either independent or dependent t-test in this investigation using appropriate readings and resources in Module 6. (Please cite specific references.)
• Write out the results in an APA format.
• Please include appropriate tables from the SPSS output used in your analyses.

Part B

Using a sample of 575 participants, compare the average years of education (variable name = “educ”) between men and women in River Forest, IL . (Note: Avoid causal inferences here, and just talk about the differences between men and women in the analysis.)

• What is the research question?  (Use “difference” language as we are no longer talking about “relationship” among variables but differences between groups.)
• What is the null hypothesis?
• What is the research hypothesis? (Non-Directional)
• Basic descriptive analysis appropriate for the variables used (e.g., mean, median, range, SD, etc.) in a paragraph form. (Don’t just include a number of SPSS tables and not talk about it.)
• State the rationale for applying either independent or dependent t-test for in this investigation using appropriate readings and resources in Module 6. (Please cite specific references.)
• Write out the results in an APA format.
• Please include appropriate tables from the SPSS output used in your analyses.

An Example of a Paired-Samples t-Test Result Write Up

“Using a sample of 99 participants, a paired-sample t-test was conducted to compare the number of words recalled (from 0 to 15) in ginkgo and placebo conditions. There was a significant difference in the number of words recalled for ginkgo (M = 6.23, SD = 3.91) and placebo (M = 4.35, SD = 3.45) conditions; t(99) = 4.12, p < .001. These results suggest that consumption of ginkgo is related to a significant or meaningful increase in one’s memory, by about two points. The size of the effect is moderate at .51.”

An Example of an Independent Samples t-Test Result Write Up

“Using a sample of 200 participants, an independent samples t-test was conducted to compare the number of words recalled (from 0 to 15) in ginkgo (n = 100) and placebo (n = 100) groups. There was a significant difference in the number of words recalled for ginkgo (M = 7.95, SD = 3.91) and placebo (M = 5.85, SD = 3.60) groups; t(198) = 1.99, p = .03. These results suggest that ginkgo group had greater word recall than their placebo counterparts, by about two words. The size of the effect is small at .27.”