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Median Quartile 1 7 Q 2 =87 (median of whole table) Q 1 =31 (median of lower half, from row 1 to 6) 2 7 3 31 4 31 5 47 6 75 7 87 8 115 Q 3 =119 (median of upper half, from row 8 to 13) 9 116 10 119 11 119 12 155 13 177
The median of a finite list of numbers is the "middle" number, when those numbers are listed in order from smallest to greatest. If the data set has an odd number of observations, the middle one is selected (after arranging in ascending order).
That is, given a measure of statistical dispersion, one asks for a measure of central tendency that minimizes variation: such that variation from the center is minimal among all choices of center. In a quip, "dispersion precedes location". These measures are initially defined in one dimension, but can be generalized to multiple dimensions.
One is not restricted to using only one of these measures of central tendency. If the data being analyzed is categorical, then the only measure of central tendency that can be used is the mode. However, if the data is numerical in nature (ordinal or interval/ratio) then the mode, median, or mean can all be used to describe the data. Using more ...
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Unlike mean and median, the concept of mode also makes sense for "nominal data" (i.e., not consisting of numerical values in the case of mean, or even of ordered values in the case of median). For example, taking a sample of Korean family names, one might find that "Kim" occurs more often than any other name. Then "Kim" would be the mode of the ...
Find the Words. Meal preparation station (Distributed by Creators Syndicate) Kubok. This article originally appeared on USA TODAY: Online Crossword & Sudoku Puzzle Answers for 12/01/2024 - USA TODAY.
(The Center Square) – A majority of Americans support President-elect Donald Trump's plan to declare a national emergency over the border crisis, according to a new poll.