03-Probability%20-%20class

03-Probability%20-%20class - Probability Concepts Cant...

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Probability UGA FDST 4090/6090 - (c) W.C. Hurst 2010 1 Probability William C. Hurst FDST 4090/6090 (2010) Concepts • Can’t predict outcome FDST 4090/6090 © W.C. Hurst 2010 • Can predict long-term pattern Probability Distribution Random variable FDST 4090/6090 © W.C. Hurst 2010 Discrete variable Continuous variable Function of Probability Distribution Experiment: FDST 4090/6090 © W.C. Hurst 2010 Results: 0 2 1 1 2 0 0 1 2 1 1 0 1 1 2 0 Probability Distribution of x Coin Toss Probability Distribution 4 5 6 7 8 ency FDST 4090/6090 © W.C. Hurst 2010 0 1 2 3 012 x = no. of heads Frequ Types of Probability Distributions Used in SQC • Continuous probability distribution FDST 4090/6090 © W.C. Hurst 2010 • Discrete probability distribution
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Probability UGA FDST 4090/6090 - (c) W.C. Hurst 2010 2 Characteristics of a Normal Distribution 1. Mean ( μ ) and standard deviation ( σ ) characterize each normal distribution of normal random variables. Both are independent 2 FDST 4090/6090 © W.C. Hurst 2010 2. 3. 4. 5. Theoretically, the curve never touches the X axis Area of probability between x 1 and x 2 A 1 FDST 4090/6090 © W.C. Hurst 2010 x 1
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03-Probability%20-%20class - Probability Concepts Cant...

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