Sample Size Calculator For 1 Proportion Test (Finite Population)

Hint: Use this calculator to determine the number of samples for achievement percentage (for example accuracy or first-time-right percentage) so as to compare with a standard expected or target value if you have a finite population (i.e. less than 50000)

Confidence Level

The minimum acceptable probability of preventing type 1 error

90%

95%

99%

99.9%

Power of Test

The minimum acceptable probability of preventing type 2 error

50%

80%

90%

95%

99%

Assumed Proportion

This is the standard or target or the known proportion. For 50%, just enter 50

Acceptable Difference %

Or Margin of Error. Alternatively, if you know the sample proportion, then it is difference between the assumed and the sample proportion. For 5%, just enter

Number1

Number2

Number3

Number

Sample Size

Finite Population

Enter a number less than 50000

Sample Size(1-proportion test) for finite population

minimum sample require to check if your proportion matches with standard or known proportion for the given population