Question

which of the following scenarios would give the most accurate data regarding student gpa?
ask the first 50 students that enter the school what their gpa is.
email the student body asking them what their gpa is.
giving students in the lunchroom a form asking them what their gpa is and collecting them to turn them in before they left.
using the student information database to pull a random sample of anonymous student gpas.

Explanation:

The first three options may have biases. Asking the first 50 students may not represent all students. Emailing may have non - response bias and students may not be truthful. Surveying in the lunchroom also has sampling bias. Pulling a random sample from the student information database is likely to give the most accurate data as it is a random and anonymous method, reducing the chance of bias and ensuring data integrity.

Answer:

Using the student information database to pull a random sample of anonymous student GPAs.