Sampling Without Replacement (VCE SSCE Mathematical Methods): Flashcards

Selecting items without returning them before next selection

Changes because composition of group changes

Dependent (not independent)

Multiply along the branches

Add across different paths

Sampling w/o replacement from finite pop. with 2 types

All probabilities must sum to 1

Number of ways to select $r$ objects from $n$ objects

$\frac{\text{favourable outcomes}}{\text{total outcomes}}$

Finite, two distinct categories, sampled w/o replacement