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Running Chi-Square in Excel
Add percent columns We start by assuming there is no difference between the observed and expected values – the null hypothesis So we expect that % of each would meet standards Add the rest of the percentages to the table
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Running Chi-Square in Excel
The highlighted area is the actual data The expected data are below Excel will compare the actual data to the expected data and see if they are significantly different In a new cell type =chitest(
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Running Chi-Square in Excel
Enter the actual range of data (in the blue box), then the expected range (in the green box) This will give us a p-value If p>0.05, then we do NOT have the evidence to say the two groups are significantly different We can’t reject the null that there is no difference between the observed and expected values If p< 0.05, then we have enough evidence to indicate the two groups are significantly different We can reject the null
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Ethics and the Public Service Assessment
Chi-square since nominal/ordinal data for DV In Excel, create summary table Add percent column Add expected % rows Chitest(actual range, projected range) p = .2263 step 1 onground online total exceeds standards 6 7 13 met standards 31 23 54 failed to meet standards 1 38 30 68 step 2 On ground online total % exceeds standards 6 7 13 13/68 met standards 31 23 54 failed to meet standards 1 38 30 68 steps 3/4 onground online total % exceeds standards 6 7 13 met standards 31 23 54 failed to meet standards 1 38 30 68 expected 19.1% (column total * %) expected 79.4% expected 1.5%
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