Statistical Procedure

This procedure can be used when the:

Outcome (Dependent) variable is a Continuous and Normally distributed measure
Exposure (Independent) variable is Continuous

Present this graphically using a Scatter/Dot Plot

In SPSS select: Graphs > Chart Builder - Gallery – Boxplot | Simple Boxplot

Analyse this in SPSS using:

Analyze >Correlate > Bivariate

Report this quoting the:

Correlation coefficient (r), 95% Confidence Intervals
Use Confidence Interval Analysis (CIA)Regression and Correlation | Correlation to calculate these values

Comments

Strength of correlation Very Strong (r = 0.8 to 1.0) Strong (r= 0.6 to 0.79) Moderate (r= 0.4 to 0.59) Weak (r= 0.2 to 0.39) None (r= 0.to 0.19) - sign ignored

References

Chapter 6. p 175 in Discovering Statistics using SPSS 3rd Edition, A. Field, Sage Publications (2009) (ISBN: 9781847879073)
Fitting lines to data in the Statistics for the Terrified package

Please Report any issues to Brian Yuen