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FACULTY ADMINISTRATIVE SCIENCE AND POLICY STUDIES
WORKSHOP ON SPSS DATA ANALYSIS29 – 30 JANUARY 2009
CORRELATION ANALYSIS
Use the Correlation transformer to determine the extent to which changes in the value of an attribute (such as length of employment) are associated with changes in another attribute (such as salary).
The correlation coefficient r is a measure of the linear relationship between two attributes or columns of data.
CORRELATION ANALYSIS
Spearman Rank Order Correlation
Spearman Rank Order Correlation use to test for non parametric data
Pearson Product Moment Correlation
The Value of Correlation Coefficient (r = ? )
The Strength of Relationship
The Direction of Relationship
Example r = 0.6755 Positive relationshipr = -0.7896 Negative relationship
Example 1
Example 2