Rules of thumb for interpreting the size of a correlation coefficient

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Size of positive correlation Size of negative correlation Interpretation
.90 to 1.00 -.90 to -1.00 Very high positive (negative) correlation
.70 to .90 -.70 to -.90 High positive (negative) correlation
.50 to .70 -.50 to -.70 Moderate positive (negative) correlation
.30 to .50 -.30 to -.50 Low positive (negative) correlation
.00 to .30 .00 to -.30 Little, if any, correlation


contributed by Frank LaBanca EdD


Interpreting the line of best fit can show outliers. Outliers can lead to different interpretations of data, and an easy method for spotting outliers is through a scatterplot.

"contributed by Lauren Moyer"

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