Labels:bulletin board | reckoner | sky | vegetarianism OCR: What is correlation? Comparing results Correlation isa statistical technique for comparing sets of data so that it can be seen how far there IS agreement between them Psychometricians use it extensively for analysing the results of psychological tests establishing what trends and patterns are to be found and drawing general conclusions about human behaviour The correlation coefficient ranges from -1 to +1. Plus 1 shows complete agreement minus perfect disagreement and zero indicates no association whatever For example suppose a set of children took two tests and that those who scored well on one test also scored well on the other while those who scored poorly on one test also scored poorly on the other The tests would have high positive correlation. Suppose however the high scorers on one ...
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