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[DOC File]Example SPSS Output for T-Test for Difference in Means
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Note the mean for each of the two groups in the “Group Statistics” section. This output shows that the average weight for European cars is 2431 pounds, versus 2221 pounds for Japanese cars. To see the results of the t-test for the difference in the two means, find the p-value for the test.
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[DOC File]STATS CHEAT SHEET - StFX
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Note: for (t(/2), if your ( = 0.05, you would use the critical t value for ( = 0.025. Hypothesis Testing: Testing r Testing b Testing Independent b’s df = N - 2 df = N - 2 df = N - 4 EXAMPLE: POWER. Power Calculations: What is the probability of correctly rejecting a false H0? Power is a function of: ( level. H1. Sample size. Test statistic used
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[DOC File]Z-Score Practice Worksheet
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A score that is 20 points above the mean. z=2. A score that is 10 points below the mean. z=-1. A score that is 15 points above the mean z=1.5. A score that is 30 points below the mean. z=-3. The Welcher Adult Intelligence Test Scale is composed of a number of subtests. On one subtest, the raw scores have a mean of 35 and a standard deviation of 6.
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[DOC File]Z-Score Practice Worksheet
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A score of 60, where the mean score of the sample data values is 40. A score that is 30 points below the mean 40. A score of 80, where the mean score of the sample data values is 30. A score of 20, where the mean score of the sample data values is 50. IQ scores have a …
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[DOC File]How to Design and Evaluate Research in Education
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A z-table gives percent of scores from any score to the mean (Appendix, pp. A-4/5) The probability for getting higher or lower than any given score can then be calculated. T-scores are often used because negative z scores awkward (all T-scores are positive) Multiply z times 10, then add 50 (p. 212 Table …
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[DOC File]Interpreting SPSS Output for T-Tests and ANOVAs (F-Tests)
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Now in the output below, we can see the results for the T-test. Look at the enlarged numbers under the column that says “t” for the t-value, “df” for the degrees of freedom, and “Sig. (2-tailed) for the p-value. (Notice that the p-value of .539 is greater than our “.05” alpha …
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T score table statistics pdf