Transcription of Chapter 208 Paired T-Test - Statistical Software
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Chapter 208 Paired T-Test - Statistical Software
NCSS Statistical Software Chapter 208. Paired T-Test Introduction This procedure provides several reports for making inference about the difference between two population means based on a Paired sample. These reports include confidence intervals of the mean difference, the Paired sample t- test, and non-parametric tests including the randomization test, the quantile (sign) test, and the Wilcoxon Signed- Rank test. Tests of assumptions and distribution plots are also available in this procedure. Research Questions For the Paired -sample situation, the prime concern in research is examining a measure of central tendency (location) for the Paired -difference population of interest.
Paired T-Test Assumptions The assumptions of the paired t-test are: 1. The data are continuous (not discrete). 2. The data, i.e., the differences for the matched-pairs, follow a normal probability distribution. 3. The sample of pairs is a simple random sample from its population. Each individual in the population has
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