Ch. 16 - Sampling Flashcards
Three ways to select items for testing:
- selecting all items in the population
- selecting specific items
- audit sampling
Selecting all items is appropriate if:
- population includes few large items
- There is significant risk
- an information system makes it cost-effective
Selecting specific items includes:
- Key items
- all items over a certain amount
- items to obtain information
Sampling risk:
the risk that the practitioners conclusion may be different from testing a sample instead of the population
An error in a test of controls is called a:
deviation
An error in tests of details is called a:
misstatement
Sample consideration - representative
is the sample indicative of the entire population
sample consideration - complete
are all transactions included
Stratification options:
- monetary value
- identifying characteristics
- representative items
Sampling Approach - two options
- statistical
2. non-statistical
Sample Selection Techniques
- Random
- Systematic
- Haphazard
- Monetary Unit
Random Sampling
samples are selected randomly
Systematic Sampling
population / samples required
Haphazard Sampling
No structured technique, but avoiding bias or predictability