Normal Key Concepts

Normal Key Concepts - Dr. Harvey A. Singer School of...

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© 2010 by Harvey A. Singer 1 OM 210:  Statistical Analysis for  Management 2. The Normal Distribution Key Concepts Dr. Harvey A. Singer School of Management George Mason University
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© 2010 by Harvey A. Singer 2 The Normal Curve f ( x ) x Mean μ Median Mode The bell-shaped curve. Also referred to as the Gaussian distribution.
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© 2010 by Harvey A. Singer 3 Normal Probabilities Associate probabilities of specified ranges of a normal r.v. X with areas under the normal curve. The total area under the entire normal curve is 1. The entire normal curve encloses unit area. The probability that the r.v. X will take any value less than some given specific value x * is Prob ( X x* ) =area under the normal curve to the left of the specific value x *.
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4 Normal Probabilities Prob ( X x* ) =the shaded area under the normal curve over the thicker portion of the horizontal axis to the left of the specific value x *. x
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Normal Key Concepts - Dr. Harvey A. Singer School of...

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