Which of the following is an accurate statement about sample size?

Question

Quizplus · Accepted Answer

Increasing the sample size usually leads to greater precision and accuracy in estimating population parameters, reducing sampling error and increasing statistical power. Therefore, a larger sample size is needed for increased accuracy. Choice A is incorrect because a smaller sample size tends to increase the size of the confidence interval due to increased variability and uncertainty. Choice B is also incorrect because sample size is not a constant percentage of population size, but depends on the research question, study design, sampling method, and desired level of precision. Choice D is incorrect because sample size is directly related to the confidence interval, as larger samples tend to produce narrower and more reliable confidence intervals.

Which of the Following Is an Accurate Statement About Sample