Statistical nugget #1: ALWAYS check your continuous variables for

**normality**before running any statistical analyses. An outlier, defined as

**any observation that is more than 3.29 standard deviations away from the mean of your continuous variable**, will artificially inflate or deflate your

*t*-values. Use

**skewness**and

**kurtosis**statistics to assess the assumption of normality for each continuous variable in your dataset. Visit www.scalelive.com/statistics-engine.html to learn more about normality and running these analyses in

**SPSS**.