Spearman Correlation ToolSpearman Correlation ToolThe Spearman Correlation tool assesses how well an arbitrary monotonic function could describe the relationship between two variables, without making any other assumptions about the particular nature of the relationship between the variables.* Correlation values ranges from â1.00 (a perfect negative correlation) to +1.00 (a perfect positive correlation). Zero indicates no correlation at all.
Field Selection tab: Choose the two fields to determine the Correlation. The two fields must be numeric and the same field cannot be chosen twice.
Columns containing unique identifiers, such as surrogate primary keys and natural primary keys, should not be used in statistical analyses. They have no predictive value and can cause runtime exceptions.
Group By (Optional) tab: To determine the correlation for a group, select Enable Group By and select the appropriate grouping field.
*http://en.wikipedia.org/wiki/Spearman's_rank_correlation_coefficient
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