You have been asked to help draw a sample of students with the object being to evaluate a newly proposed grading system.Which statement would you want to guide your sample selection?

Question

Quizplus · Accepted Answer

A random sample of 500 students from all students affected by the new grading system is the best choice to minimize selection bias and ensure representativeness of the population being evaluated. Option A does not consider the size of the population and may not provide enough statistical power for the analysis. Option B introduces bias by excluding students from other grades who may also be affected by the new grading system. Option D is too narrow and may not reflect the diversity of the population being evaluated.

You Have Been Asked to Help Draw a Sample of Students