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## Normal Distribution (Bell Curve)

## This is a pattern which repeats itself endlessly not only with pieces of pie but in manufactured products and in nature. There is always an inherent Variability. Sometimes it�s a matter of finding a measurement device sensitive enough to measure it.

## Measurements may be in volts, millimeters, amperes, hours, minutes, inches or one of many other units of measure.

## It you take a sample of a population (such as height) and you chart their distribution, you will end up with a curve that looks like a bell.

## A Distribution which looks like a bell is a Normal Distribution. Normal Distributions are the most common type of distribution found in nature - but they are not the ONLY type of distribution.