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

coefficient of correlation Discussion - Essay Example2. Pearsons Product Moment Correlation Coefficient This is considered the strongest measure of correlation and is erogenous to even small variations in entropy. 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 keisternot be used with data on simple(a)r 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 square-shouldered. 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 buy the farm to cardinal 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 Correlation 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.