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# Lec22 - Case 4 Analysis of Paired Data Analysis of Paired...

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IOE/Stat 265, Fall 2009 L #22 Lecture #22 Paired “t” Test 9-1 Differences in Means w/Variances Known 9-2 Differences in Means w/Variances Unknown 9 3 Paired t Test 9-3 Paired t -Test 9-4 Differences Between Proportions 9-5 Ratios of Variances from Normal Distributions 1 Case 4 Analysis of Paired Data Case 4. Analysis of Paired Data All i t t d id t ti All previous test procedures consider testing for a difference between 2 different samples. The analysis of paired data is used for experimental situations in which there is only one set of n individuals or experimental objects, and 2 observations are made on each individual or object In other words the each individual or object. In other words, the data are observed in pairs (2 measurements on the same part or individual) 2 Analysis of Paired Data Z-test and t-test: m individuals from population 1, n individuals Z test and t test: m individuals from population 1, n individuals from population 2. Two independent populations.

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Lec22 - Case 4 Analysis of Paired Data Analysis of Paired...

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