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Unformatted text preview: tribution of measurement errors, blood pressure, pulserate, height, weight of a large sample. v༇ As we will see later, sample means and proportions tend to be
approximately normally distributed whenever repeated samples
are taken from a given population of any shape.
v༇ Also, sums of independent random variables of comparable
variance are approximately normal when the number of
summands is large. Examples: Fitting Normal curves to Quantitative Data
DATA: Price of 97 one carat diamond of similar cut and clarity. Probability Model: A model in which a Normal distribution is used to describe an observable random process with µ set to the mean of the data and σ set to s. Set µ = $4,066 & σ = $738. Examples: Fitting Normal curves t...
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 Fall '07
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