tetrachoric correlation coefficient

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Noun1.tetrachoric correlation coefficient - a correlation coefficient computed for two normally distributed variables that are both expressed as a dichotomy
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?"
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References in periodicals archive ?
For the whole sample, the tetrachoric correlation coefficient was found to be .62 indicating satisfactory positive relationship between VCI and students academic achievement scores.
Software forComputing the Tetrachoric Correlation Coefficient
The tetrachoric correlation coefficient (Pearson, 1900) estimates the relationship between two dichotomous variables assuming an underlying bivariate normal distribution.