spss assignment 4

Jul 18th, 2016
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2.Comparison of Means a.Perform a dependent t test to assess your hypotheses above (note that many versions of SPSS use the term “paired samples t test” rather than “dependent t test”; the test itself is the same. b.In APA style, write one or two paragraphs that describe the dataset, gives your hypothesis, and presents the results of the dependent sample t test. Part B. Independent t test We will start with the data file used in Part A (“Activity 4a.sav”). Suppose, however, you [the researcher] encountered a small problem during data collection: after the post-tests were collected, you realized that the post-test form did not ask for the students’ identification number. As such, it will be impossible to match pre-test scores to post-test scores. Rather than simply give up, you start thinking about the data you do have and try to determine whether you can salvage your project. In assessing the situation, you realize that you have 40 pre-test scores and 40 post-test scores, but no

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Answer1. Exploratory Data Analysis/Hypothesesa.Descriptive StatisticsNMeanStd. DeviationCreativity pre-test4040.158.304Creativity post-test4043.359.598Valid N (listwise)40b. Bar chart representing mean pre-post test scoreComparative mean score of Creativepre-post test44434241Mean403938Creativity pre- Creativity posttesttestc. Null hypothesis: participation in the course does not affect writing scoresAlternative Hypothesis: participation in the course affects writing scores.2. Comparison of Meansa. Paired Samples StatisticsMeanPair 1NStd. DeviationStd. Error MeanCreativity pre-test40.15408.3041.313Creativity post-test43.35409.5981.518Paired Samples CorrelationsNPair 1Creativity pre-test &Correlation40Sig..650.000Creativity post-testPaired Samples TestPaired DifferencesMeanPair 1Creativity pre-test Creativity post-test-3.200Std. Deviation7.576Std. Error Mean1.198Paired Samples TestPaired Differences95% Confidence Interval of theDifferenceLowerPair 1Creativity pre-test -Upper-5.623T-.777-2.671Creativity post-testPaired Samples TestdfPair 1Creativity pre-test -Sig. (2-tailed)39.011Creativity post-testb. The paired sample t-test analysis indicates that mean score of Creative post test score(M=43.35) is significantly greater as compare to Creative pre test score (M=40.15). The resultsalso indicate that there is positive correlation b

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