Select the sample most representative of the population of interest: The father of a junior high school student wants to determine the most popular book among junior high students. Select the sample with the least potential bias.
What are your choices?
To select the sample that is most representative of the population of interest, the father should aim for a sample with the least potential bias. Here's a suggested method to accomplish this:
1. Create a sampling frame: Begin by compiling a comprehensive list of all junior high students from various schools or districts that the father wants to include. Having a complete list ensures that every student in the population has an equal chance of being selected.
2. Random sampling: Use a random sampling technique to select a subset of students from the sampling frame. The most straightforward method is simple random sampling, where each student has an equal chance of being selected. This method minimizes bias by giving every student an equal opportunity to be included in the sample.
3. Obtain informed consent: Consider the ethical aspect of conducting research on junior high students. Seek permission from the school administration and parents of the selected students before proceeding with the study. Ensure the students themselves are willing to participate.
4. Sufficient sample size: To ensure the sample's representativeness, aim for a sample size large enough to account for diverse student backgrounds and preferences. The larger the sample size, the more reliable the results will be.
5. Randomize book selection: Once the sample is determined, randomize the selection of books to be considered. This can be done by using a random number generator or a similar method. Ensure that each student is given an equal chance of selecting any given book.
By following these steps, the father can select a sample that minimizes bias and represents the population of interest in a fair and accurate manner.