Reporting correlations
The SAMPL guidelines explain how to report statistics. When reporting a Pearson's correlation you should include the sample size (n) that was used to calculate the r statistic. Write this as r(n = ___) = r statistic. Alternatively, you can report the degrees of freedom (df) instead of the sample size. You calculate this as n - 2, and write it as r(df = ___) = r statistic.