Page 118 - Quantitative Data Analysis

Quantitative Data Analysis
Simply Explained Using SPSS

Unit # 8

CORRELATION

Learning Outcomes

At the end of this unit, readers will be able to:
 Understand and be able to perform correlation analysis.
 Identify when to use correlation statistics in research.
 Calculate the correlation manually and in SPSS.
 Distinguish between negative and positive correlations

with examples.
 Understand the concept of scatter plot
 Interpret and writing correlation results.
 Understand factors that affect correlation
Correlation

CORRELATION

The correlation is a measure of the degree of relationship between
two variables ("the extent to which change in one variable is
associated with change in another variable", Ary, Jacobs &Razavieh,
th
p. 154, 5 edition). Correlation is used to find the relationship
between two continuous variables. Correlation between two
continuous variables can be shown visually through scatter plot.

The Theory and Applications of Statistical Inferences 102