Page 14 - Statistics presented by Dr. Sara Ismail Aborass

9/8/2023

Correlation

Finding the relationship between two quantitative
variables

Correlation is a statistical technique used to
determine the degree to which two variables are
related or measure strength of relation between two
variables.

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Two quantitative variables
One variable is called independent (X) and the second is called
dependent (Y)
Points are not joined

The pattern of data is indicative of the type and strength of
relationship between your two variables:

 See the diagram type

 strong relationship (closely located) strength
 weak relationship (widely scattered)

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