Statistical Analysis 5: Chi-squared ( 2) test for 2 …
4 Example 2: Research question: Is there a association between the proportion of defectives and the machine used? A sample of 200 components is selected from the output of a factory that uses three different machines to manufacture these components.
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Statistics: 1.1 Paired t-tests - www.statstutor.ac.uk
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Statistical Analysis 3: Paired t-test - www.statstutor.ac.uk
www.statstutor.ac.uk3 If we were to do this experiment 100 times, 95 times the true value for the difference would lie in the 95% confidence interval. In our case, the 95% CI is from 0.7 to 3.4. This confirms that, although
Statistics: 2.3 The Mann-Whitney U Test - statstutor
www.statstutor.ac.ukThe exact test and the normal approximation give similar results. We would conclude ... 3 Carrying out the Mann-Whitney U test in SPSS — Choose Analyze — Select Nonparametric Tests — Select 2 Independent Samples — Highlight your test variable (in our example this would be age) and click on the arrow
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