Tut 3.3 Normal Distribution

The bell shaped curve is the graph of a normal distribution.



Every normal distribution is identified by its mean, and its standard deviation.
<--WE NEED TO KNOW!

68-95-99 rule:

• 68% of the data are within 1 standard deviation of the mean


• 95% of the data are within 2 standard deviation of the mean


• 99.7% of the data are within 3 standard deviations of the mean

The name of the part that strikes the bell is called a clapper.