19 11 2012 1 Population Sample Vs Population 19 11 2012 2 Samples V

2012 Population Sample Population 2012 Samples Population Sample Estimates Error Standard Error Samples Population The Estimate Values One Smaller Than

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19 11 2012 1 Population Sample Vs Population 19 11 2012 2 Samples Vs Population Sample Estimates Error Standard Error SE Samples Vs Population The Estimate SE 2 Values One Is Smaller Than The Estimate And The Other Is Bigger Than The Estimate Mean SE Smaller Mean SE Bigger The Interval Between These 2 Values Confidence Interval The 2 Values Are Called The Confidence Limits 95 CI X 2 SE 19 11 2012 3 Example The Mean SBP In An Experiment 130 Mm Hg The SE Of That Mean SEM Is 5 Mm Hg The 95 CI Of That Mean Mean 2 SEM 130 10 To 130 10 120 To 140 Mm Hg Based On This Sample We Are 95 Confident That The True Population Mean Is From 120 To 140 Mm Hg If The Same Measure Is Repeated On 100 Samples The Mean In 95 Of Them Will Be Within The CI Example The Prevalence Of Influenza In An Experiment 5 The SE Of That Prevalence SEP Is 2 The 95 CI Of That Prevalence 2 SEM 5 4 To 5 4 1 To 9 Based On This Sample We Are 95 Confident Th

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