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Cards In This Set
| Front | Back |
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Statistics notation
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 See table |
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Mean
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 A measure of central tendency |
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Median
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 A measure of central tendency |
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Mode
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 A measure of central tendency |
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Box- and- whisker
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 A graphical rperesnatation of the five- number summary |
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Summation
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 This expression means sum off the values x, starting at x1 and ending at xn |
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Means absolute deviation
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 A measure of the spread of a data set. The mean of the sum of the absolute value of the differences between each element and the mean of the data set. |
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Variance
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 A measure of the spread of a data set. The mean of the squares of the differences between each element and the mean of the data set |
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Standard deviation
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 A measure of the spread of a data. The square root of the ,mean of the squares of the differences between each element and the mean of the data set or the square root of the variance |
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Z- score
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 The number of the standards deviations an element is way from the mean. Where x I’d an element of the data set, (mean symbol) is the mean of the data set, and ó is the standard deviation of the data set |
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Z- score pt. 2
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 The number of standard deviations an element is from the mean |
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Elements within one standard deviation (ó) of their mean (insert mean symbol)
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 See graph |
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Scatterplot
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 Graphical representation of the relationship between two numerical sets of data. |
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Positive correlation
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 In general, a relationship where the dependant (y) values increase as independent values (x) increase |
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Negative correlation
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 In general, a relationship where the dependant (y) Values decrease as independent (x) values increase |
