When the required sample size calculated by using a formula is not a whole number, what is the best choice for the required sample size?
A) Round the result of the calculation in a standard way.
B) Round the result of the calculation up to the nearest whole number.
C) Round the result of the calculation down to the nearest whole number.
D) None of these choices are correct.

Question

Quizplus · Accepted Answer

When the required sample size calculated is not a whole number, it is necessary to round it up to the nearest whole number. This ensures that the sample size is large enough to provide a reliable estimate of the population parameter. Rounding down would result in a smaller sample size, which may not be representative of the population.

When the Required Sample Size Calculated by Using a Formula