standard of reference for many probability problems I Characteristics of the Normal distribution • Symmetric, bell shaped • Continuous for all values of
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Probabilities correspond to areas under the curve and are calculated over intervals rather than for specific values of the random variable Although many types
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recognise the shape of the frequency curve for the normal distribution and the standard normal distribution • calculate probabilities using the standard
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distribution in all of probability and statistics Many populations have distributions formula • These probabilities can then be found “normal tables”
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6 We cannot answer these types of questions just by using a calculator because there is no formula to evaluate probabilities for the normal distribution
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to calculate normal probabilities The normal curve also provides a useful approxi- mation to other probability distributions: this is one of the
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Calc ? Probability Distributions ? Normal Each topic has its own page of screenshots • Calculating Cumulative Probabilities from a Normal Distribution 2
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where µ = 0 and ? = 1 using following equation, Z =X ? µ ? We introduce normal distributions by first looking at another continuous probability
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Basic Statistics Normal Distributions How frequency distributions are used to calculate probability ? Properties of a normal probability distribution
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