Which of the following does the textbook note as the proper way to calculate sample size?
A) using a percentage of population formula
B) using the price-value formula
C) using a 1:10 ratio on sampling frame
D) using the "100" for local study; "1,000" for national study approach
E) using the confidence interval formula

Question

Quizplus · Accepted Answer

The proper way to calculate sample size is using the confidence interval formula, which considers the desired level of confidence, the variability of the population, and the desired precision. Using percentages, price-value, or arbitrary ratios do not adequately account for these factors and may result in a sample size that is too small or too large. Using a fixed number such as 100 or 1000 may also not take into account the variability of the population and the desired level of confidence.

Which of the Following Does the Textbook Note as the Proper