Sampling Approach Flashcards
1
Q
Random sample
A
Every item has equal and nonzero chance of being selected
2
Q
Interval (systematic) sampling
A
Assumes items are arranged randomly in the population (we will select every #th item
(1000/35=57 (random selected)
Good for when we want to test if controls were good throughout the year
3
Q
Block (cluster) sampling
A
Randomly selects groups of items as the sampling units rather than individual items . EG want to review all items in May and dec only
4
Q
Stratification
A
Minimizes variability, divides pop into strata of dollar increments
