Statistics Concepts

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explanatory variable

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(x) input; helps to explain or predict the other variable

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response variable

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(y) output; measures an outcome of a study

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segmented bar graph

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stacks bars and shows relative frequency

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association

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knowing the value of one variable helps predict the value of other variable; % are not the same

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categorical

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data that can be grouped into categories or labels based on characteristics or similarities

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quantitative

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data that can be measured and expressed in numerical value

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outlier

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a data point that is significantly different from the majority of other values in a set of data

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extrapolation

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method for predicting future data based on historical data

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regression to mean

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extreme values of "x" tend to be paired with less extreme values of "y".