A relationship between objects or variables.

A variable that is not of interest to the researcher, but which interferes with the statistical analysis. In statistical analyses, control variables are held constant or their impact is removed to bet [..]

Using of a variety of research methods to gain a diverse source of data pertaining to a specific research problem or question. This process helps to enhance the validity of data since it does not over [..]

A term used in survey research to refer to the match between the target population and the sample.

A measure of how well the independent, or predictor, variables predict the dependent, or outcome, variable. A higher adjusted R-square indicates a better model. Adjusted R-square is calculated based o [..]

Information about individual children, families, and/or providers of early care and education and other family benefits that are collected and maintained as part of the operation of government program [..]

A total created from smaller units; the population of a county is an aggregate of the populations of the cities, rural areas, etc. that comprise the county.

The probability that a statistical test will find significant differences between groups (or find significant predictors of the dependent variable), when in fact there are none. This is also referred [..]

The experimental hypothesis stating that there is some real difference between two or more groups. It is the alternative to the null hypothesis, which states that there is no difference between groups [..]

Same method as ANOVA, but analyzes differences between dependent variables.