Normal Distributions

Normal Distributions are "theory and practice", they are frequently polygons and histograms.

Characteristics of Normal Distributions:

*Theoretical(approximation)*

*Symmetry about the mean*

*Follows the rule - 68-95-99.7*

*mean=median=mode*

Ways to figure out Normal Distributions:

*www.ronblond.com-Gr.12-areas under the normal distribution/x&z values*

*Graphing calculator: 2nd-vars-normal cdf-low value, high value, mean, standard deviation*