1. Data distributions can, and often are, shaped in different ways. This is attributed to things like skewness and kurtosis. Know what these things are and what they mean to your data. 2. Range,...

1. Data distributions can, and often are, shaped in different ways. This is attributed to things like skewness and kurtosis. Know what these things are and what they mean to your data.

2. Range, variance, and standard deviation are different. Remember why we use and report each in certain circumstances as well.