### 31. Recursive Relationship

In statistics, a recursive relationship between two variables is one in which the causal effects run in only one direction.

### 32. Regression Analysis

Regression is a statistical technique that is used to learn more about the relationship between an independent (predictor) variable and a dependent (criterion) variable.### 33. Sampling Distribution

** **In statistics, a sampling distribution is a theoretical mathematical distribution of all the possible sample outcomes that can be obtained by selecting samples from a population.

### 34. Sampling Weight

A sampling weight is a statistical correction factor that compensates for a sample design that tends to over- or under-represent various segments within a population.

### 35. Secondary Analysis

Secondary analysis is the practice of analyzing data that have already been gathered by someone else, often for a distinctly different purpose.

### 36. Specification

In statistics, specification is the practice of seeing if a particular relationship among variables remains the same in different segments of a population.