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11 Cards in this Set
- Front
- Back
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box-and-whisker plot
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a graphical display focusing on five values - the first and third quartiles, the median, and the maximum and minimum values in a data set
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Chebyshev's Rule
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a mathematical statement that describes how values in any data set are dispersed around the mean
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coefficient of variation
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the ratio of the standard deviation to the mean of the data set
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correlation coefficient
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a standardized covariance; a value between -1 and +1 that indicates the degree of association between two data sets
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covariance
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a measure of association showing the degree to which two data sets move or vary together
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empirical rule
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describes how data in a bell-shaped distribution are disperse around the mean
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interquartile range
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the difference between the 1st and 3rd quartiles; the span of the middle 50% of values in the data set
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outliers
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extreme values in a data set; values that lie far above or far below the main body of values in a data set
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percentile
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a marker that serves as the (approximate) upper bound for any given percentage of values in a data set
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quartiles
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markers that identify (approximately) the boundaries between successive 25% clusters of values in a data set - the 1st quartile bounds the lowest 25%, the 2nd the lowest 50%, and the 3rd quartiles bounds the lowest 75%
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z-score
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a measure of distance from the mean in standard deviations
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