|
|
|
TIED RANKS
In a NONPARAMETRIC TEST involving RANKED DATA, if two data have TIED VALUES then they will deserve to receive the same rank value. It is generally agreed that this should be the average of the ranks which would have been assigned if the values had been discernably unequal. Thus, the ranks assigned to a set of 6 data, with ties present might emerge as sets such as : 1,3,3,3,5,6 or 1,2,3.5,3.5,5,6. The possibility of TIED RANKS leads to elaborations in the otherwise-standard tasks of computing or tabulating RANDOMISATION DISTRIBUTIONS where data are replaced by ranks.
Назад | Вперед |
|
|
|
СТАТИСТИЧЕСКИЙ
