1. Algebra 1/4/17

2. AGENDA
Standard Deviation

4. Symmetric Distribution
Normal Distribution
Bell Curve
Symmetric Distribution
The normal distribution, also called a Gaussian distribution or a bell-shaped curve, is likely the most well-known distribution in statistics. Normal distributions can be completely described by their mean and standard deviation. Normal distributions will follow the 68–95–99.7 rule (also known as the three-sigma rule or empirical rule), which states that 68% of all values fall within one standard deviation of the mean, 95% of values fall within two standard deviations, and 99.7% of the values fall within three standard deviations of the mean.

5. Deviation just means how far from the normal or average

8. Was Class Height a normal
Distribution?
Can we calculate the
standard deviation?

9. Figure the Standard Deviation for the following histogram: