Descriptive Statistics


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What is lenght and depth of penguin bills?{Copyright Allison Horst}


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Or even specify the exact intervals we want, here intervals from 0 to 6500 gram in intervals of 250 gram:


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The histogram provides us with a visual indication of both range, the variation of the values, and an idea about where the data is located.


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Tidy Data


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The normal distribution


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The Normal Distribution. The area under the curve is 1, equivalent to 100%.


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Testing for normality


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Linear regression


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They are relatively close to normal.


Multiple Linear Regression