**biserial correlation coefficient** — noun a correlation coefficient in which one variable is many valued and the other is dichotomous • Syn: ↑biserial correlation • Topics: ↑statistics • Hypernyms: ↑correlation coefficient, ↑coefficient of correlation, ↑ … Useful english dictionary

**Point-biserial correlation coefficient** — The point biserial correlation coefficient ( rpb ) is a correlation coefficient used when one variable (e.g. Y ) is dichotomous; Y can either be naturally dichotomous, like gender, or an artificially dichotomized variable. In most situations it… … Wikipedia

**Correlation** — In probability theory and statistics, correlation, (often measured as a correlation coefficient), indicates the strength and direction of a linear relationship between two random variables. In general statistical usage, correlation or co relation … Wikipedia

**correlation coefficient** — noun a statistic representing how closely two variables co vary; it can vary from 1 (perfect negative correlation) through 0 (no correlation) to +1 (perfect positive correlation) what is the correlation between those two variables? • Syn:… … Useful english dictionary

**Correlation and dependence** — This article is about correlation and dependence in statistical data. For other uses, see correlation (disambiguation). In statistics, dependence refers to any statistical relationship between two random variables or two sets of data. Correlation … Wikipedia

**biserial** — biserially, adv. /buy sear ee euhl/, adj. Statistics. of or pertaining to the correlation between two sets of measurements, one set of which is limited to one of two values. [1830 40; BI 1 + SERIAL] * * * … Universalium

**coefficient of correlation** — noun a statistic representing how closely two variables co vary; it can vary from 1 (perfect negative correlation) through 0 (no correlation) to +1 (perfect positive correlation) what is the correlation between those two variables? • Syn:… … Useful english dictionary

**Item response theory** — In psychometrics, item response theory (IRT) is a body of theory describing the application of mathematical models to data from questionnaires and tests as a basis for measuring abilities, attitudes, or other variables. It is used for statistical … Wikipedia

**List of statistics topics** — Please add any Wikipedia articles related to statistics that are not already on this list.The Related changes link in the margin of this page (below search) leads to a list of the most recent changes to the articles listed below. To see the most… … Wikipedia

**Effect size** — In statistics, an effect size is a measure of the strength of the relationship between two variables in a statistical population, or a sample based estimate of that quantity. An effect size calculated from data is a descriptive statistic that… … Wikipedia