| 释义 |
Sheppard's correction Sheppard's correction[′shep·ərdz kə‚rek·shənz] (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. |