# Two-Related-Samples Tests

The Two-Related-Samples Tests procedure compares the distributions of two variables.

**Example.** In general, do families receive the asking price
when they sell their homes? By applying the Wilcoxon signed-rank test
to data for 10 homes, you might learn that seven families receive
less than the asking price, one family receives more than the asking
price, and two families receive the asking price.

**Statistics.** Mean, standard deviation, minimum, maximum,
number of nonmissing cases, and quartiles. Tests: Wilcoxon signed-rank,
sign, McNemar. If the Exact Tests option is installed (available only
on Windows operating systems), the marginal homogeneity test is also
available.

Two-Related-Samples Tests Data Considerations

**Data.** Use numeric variables that can be ordered.

**Assumptions.** Although no particular distributions are assumed
for the two variables, the population distribution of the paired differences
is assumed to be symmetric.

To Obtain Two-Related-Samples Tests

- From the menus choose:
- Select one or more pairs of variables.

This procedure pastes NPAR TESTS command syntax.