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These flashcards cover key vocabulary related to efficient statistics, including definitions and descriptions relevant to the course material.
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Efficient Statistics
Statistics that are designed to extract the most information about a characteristic from a column of data values.
Mean
The arithmetic average of all of the data values in a column of data.
Standard Deviation
An approximation of the average deviation found by taking the square-root of the variance.
Deviation
How far a data value is from its mean value.
Variance
A standardized measure of spread for a column of data values found by dividing the sum of squares by the degrees of freedom.
Histogram
A graphical representation used to see the shape of distribution in data.
Sum of Squares
A raw measure of spread for a column of data values found by squaring all the deviations from the mean, then summing all the squares.