Different Measures of Simple Correlation

There are different methods of studying correlation between any two, or more series. But for measuring the correlation between any two variables i.e. simple correlation, selection of the suitable method may be make out of the following:

• Diagrammatic method.
• Graphic method.
• Karl Pearson’s co-efficient method.
• Spearman’s co-efficient method.
• Concurrent deviation method.
• Least square method.