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## The Correlation Method

Correlation is the relationship between two or more sets of paired variables. The degree of relationship is measured and described by the coefficient correlation. Both the parametric Pearson product moment method and the Spearman non-parametric method is presented. Methods of determining their statistical significance are considered.

#### Meaning and Concept of Correlation

We have considered the description of a single variable. In education, many situations arise that involve two or more variables. Suppose we have the height and weight of each one of a group of 12-year-old girls. We can compute the mean and standard deviation of height and we can do the same for weight. But a very important question may be: Is there any ...

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