What is formula for Stratified Sampling?, population/total population x sample size, sample/total population x sample size, sample/population x sample size, What is a sample size?, a small group of data, all of our data, the data we cannot find, , A, B, C, D, , A, `B, C, D, , A, B, C, D.

Табло

Визуален стил

Опции

Шаблон за превключване

)
Възстановяване на авто-записаната: ?