Random sampling requires 84 items selected using a random number generator from a population of 5,000. Each item has an equal probability of selection.
Quick reference: sample sizes by population
Population
90%
95%
99%
100
49
80
87
500
72
176
250
1,000
77
213
358
5,000
81
253
476
10K
82
260
498
50K
83
267
517
100K
83
268
520
Based on expected error rate of 2% and tolerable error rate of 5% (attribute sampling).
SA 530 note
Per SA 530, professional judgement should supplement statistical calculations. Consider the nature of the population, stratification opportunities and specific engagement risks when determining final sample sizes.
Beyond sampling
Move past sampling - 100% of transactions, automatically.
Coraa selects samples intelligently and tests every transaction, flagging anomalies before they hit your working paper.
Next
After you've sized the sample, size the engagement.
