| Noun | 1. | split-half correlation - a correlation coefficient calculated between scores on two halves of a test; taken as an indication of the reliability of the test statistics - a branch of applied mathematics concerned with the collection and interpretation of quantitative data and the use of probability theory to estimate population parameters coefficient of correlation, correlation coefficient, correlation - 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?" |