FACULTY ADMINISTRATIVE SCIENCE AND POLICY STUDIES

ADS511 RESEARCH METHOD AND DATA NALAYSIS

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