单词 | Sheppard's correction |
释义 | Sheppard's correction [`shep·ǝrdz kǝ´rek·shǝnz] STATISTICS A correction for moments computed for a frequency distribution of grouped data to adjust for the error that is introduced by the assumption that all the data within a class are at the midpoint of the class; the adjustment is made by subtracting one-twelfth of the square of a grouping unit from the estimated variance. |
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