What three factors are needed to calculate sample size?
A) variability, desired accuracy, and level of confidence
B) variability, desired accuracy, and population size
C) accuracy, confidence level, and population size
D) accuracy, population size, and costs
E) variance, standard deviation, and dispersion

Question

Quizplus · Accepted Answer

To calculate sample size, you need variability (to understand the spread of data), desired accuracy (margin of error), and level of confidence (how sure you want to be about the results).

What Three Factors Are Needed to Calculate Sample Size