Pearson's Correlation Coefficient
Values of the Coefficient
A correlation greater than 0.8 is generally described as strong, whereas a correlation less than 0.5 is generally described as weak. These values can vary based upon the "type" of data being examined. A study utilizing scientific data may require a stronger correlation than a study using social science data.
If a correlation coefficient is found that is larger than +1 or less than - 1, there must have been a calculation error. Keep this in mind when calculating a correlation coefficient.
If a correlation coefficient is found that is larger than +1 or less than - 1, there must have been a calculation error. Keep this in mind when calculating a correlation coefficient.