FEB15PP - "There are two ways to slide easily through...

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"There are two ways to slide easily through life: to BELIEVE everything or to DOUBT everything; both ways save us from thinking." – Theodore Rubin
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The Empirical Rule The Empirical Rule 68% fall between -1 and +1 standard deviations 95% fall between -2 and +2 standard deviations 99.7% fall between -3 and +3 standard deviations
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The Empirical Rule The Empirical Rule
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The Empirical Rule The Empirical Rule
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The Empirical Rule The Empirical Rule S=Standard Deviation
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The Normal Curve The Normal Curve MirrororriM Image of Itself .5000 is AREA .5000 + .5000 = 1.00 = AREA
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Standard Deviation Standard Deviation S = standard deviation Σ = sum X = item/observation X = mean N – 1 = degree of freedom 2
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Standard Standard Deviation Deviation A value, that when calculated, allows for a standard to be created. Then a base of difference or deviation difference can be applied. = = Variance Variance
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Standard Standard Deviation Deviation Den A Cowboy 8 Black 6 Athlete 6 Swimmer 2 Polar 5 Fireman 3 Σ = 30 Mean = 30/6 = 5 2 3 5 6 6 8 Median = 5.5 Mode = 6
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FEB15PP - "There are two ways to slide easily through...

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