Suppose you are researching the eating habits of people your age. What sampling method could you use to find the percent of students in your grade who eat five servings of fruit and vegetables each day? What is an example of a survey question that does

1 Answer
Jun 15, 2018

For a small class it would be best to ask every student.


"Sampling" is really only necessary when the entire population of interest is either too large to unavailable for polling. When it is needed, the sample size is calculated from the desired confidence interval of the results and the estimated population size.

For small populations - such as a class - it is best to simply obtain answers from ALL of the students. If a few are unavailable you can see if their omission affects the data accuracy significantly before proceeding with the analysis.

This type of question may best be posed as an open-ended single response. That is, simply ask "How many servings of fruits or vegetables do you eat in a day?" You can then sort and analyze the responses in any way that you like.