Correlation Discussion Essay Example | Topics and Well Written Essays - 250 words

Correlation Discussion - Essay Example 2. Pearson’s Product Moment Correlation Coefficient: This is considered the strongest measure of correlation; and is sensitive to even small variations in data. It is also a base for predictive analysis. The biggest problem with this method is that it requires data that is either on an equal interval or ratio scale; and cannot be used with data on simpler scales. 3. Rank Order Correlation Coefficient: This method is computed with data on an ordinal scale; and with a reasonably large sample size the results are quite robust. While the technique is quite robust, it can get extremely cumbersome as the size of the data set increases. 4. Biserial Correlation Coefficient: If the data sets belong to two variables that are inherently continuous, but the data available on one has been reduced to two discrete categories; one needs to compute a Biserial correlation coefficient. This technique is not as robust; and should not be substituted for a stronger one. 5. Point – Biserial C orrelation Coefficient: If a continuous variable needs to be correlated with a discrete dichotomous one; a Point – Biserial Correlation coefficient is computed. This technique is simple and important in fields of study where such occurrences are commonplace; but it is otherwise not too robust. 6.