After completing this module, you should be able to ...

- Describe the shape, center, and dispersion of a normal distribution.
- Explain the physical characteristics of a normal distribution that are represented by the mean and standard deviation.
- Estimate percentages of individuals and values of variables using the 68-95-99.7 Rule.
- Identify the difference between "forward" and "reverse" types of calculations.
- Accurately make "forward" calculations with R.
- Accurately make "reverse" calculations with R.

## Preparation for Class

You should read this and watch these videos:

- Characteristics of Normal Distributions [7 mins]
- 68-95-99.7 Rule – A [9 mins]
**or**B [8 mins] - Types of Calculations (Forward & Reverse) [4 mins]
- Forward Calculations in R [6 mins]
- Reverse Calculations in R [6 mins]