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trimming

n.

1. the exclusion of a fixed percentage of cases at each end of a distribution before calculating a statistic on the set of data. This is done to eliminate the influence of extreme scores on the estimate.

2. in path analysis, the removal of nonsignificant paths after the first run of analyses. The analysis is then rerun until the best fitting model is obtained. The ultimate model should then be cross-validated on another data set.

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Psychology term of the day

May 8th 2024

linear correlation

linear correlation

a measure of the degree of association between two variables that are assumed to have a linear relationship, that is, to be related in such a manner that their values form a straight line when plotted on a graph. It provides an index of the degree of constant change in the value of one variable (y) for each unit change in the value of another variable (x).