OpenBook Yamane Calculator
OpenBook Yamane Calculator (OY Calculator, 2022) is a free online sample size calculator developed to help research students or other researchers from various fields worldwide, having problem in calculation using Taro Yamane Formula manually, determine sample size accurately.
Taro Yamane Formula is written as
n = N / (1 + Ne2)
- n = Number of samples,
- N = Total population and
- e = Error tolerance (level).
Example Question: Use Taro Yamane Formula to find out what sample of a population of 17,552,940 people in Lagos State, Nigeria, you need to take for a survey on their Techno Phone preferences.
Step 1: Figure out what you want your confidence level to be. For example, you might want a confidence level of 95 percent (giving you an alpha level or confidence interval or margin error of 0.05), or you might need better accuracy at the 98 percent confidence level (alpha level or confidence interval or margin error of 0.02).
Step 2. Plug your data into the formula. In this example, we’ll use a 95 percent confidence level with a population size of 17,552,940.
- n = N / (1 + N e2) =
- 17552940 / (1 + 17552940 * 0.05 2) = 399.990885
Step 3: Round your answer to a whole number (because you can’t sample a fraction of a person or thing!)
- 399.990885 ≅ 400
To use OpenBook Yamane Calculator (OY Calculator, 2022), click here to get it from the homepage.
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