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chapter 6 - Normal Curve

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Across
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Converting raw data values to z scores
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This value gives how many standard deviations a data value is above or below the mean.
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Curve used to describe the distribution of a continuous random variable
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An adjustment made when when approximating a discrete distribution with a continuous one.
Down
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The population standard deviation divided by the square root of n
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Let a sample mean be the mean of a large simple random sample from a population with a particular mean and standard deviation. Then, the mean of the sampling distribution is equal to the population mean and the standard deviation of the sampling distribution is equal to the population standard deviation divided by the square root of n.
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Approximately 68% of data values lie within one standard deviation of the mean. Approximately 95% of data values lie within two standard deviations of the mean. Approximately 99.7% ( almost all) of the data values lie within three standard deviations of the mean.