| 生物学 |
mean-square deviation (MWCD Alexander Demidov); MSD (A measure of the extent to which a collection v1,v2, ..., vn of numbers is unequal; it is given by the expression (1/n )[(v1 – ν̄ )2 + . . . + (vn – ν̄ )2], where ν̄ is the mean of the numbers. MHST. The mean of the squares of the differences between a set of data values and some fixed central value (usually the mean); the variance of a set of values; (formerly) †the standard deviation of a set of values ( obsolete ). ODE Alexander Demidov) |
