The most elementary statistical test is the paired samples t-test with just two pairs. Here the data set to be analysed consists of two numbers (the two paired differences), and the statistical test examines whether the population mean is zero. This test can be derived in a surprisingly fast and intuitive manner by plotting one number against the other on a piece of graph paper, then joining th...

This procedure allows you to study the power and sample size of tests of equivalence of means of two correlated variables. Schuirmann’s (1987) two one-sided tests (TOST) approach is used to test equivalence. The paired t-test is commonly used in this situation. Other tests have been developed for the case when the data are not normally distributed. These additional tests include the Wilcoxon si...

abstract background: cancer has significant traumatic effects on the family members of the patients, particularly in asia’s tightly knitted families. research evidence suggests a debilitating impact of cancer on the quality of life of the afflicted individuals, their spouses, and their families. since a few studies have been carried out on the quality of life of adolescents living with parents ...