Alana and Ramiro are writing an article for the school newspaper about whether their classmates prefer to buy their lunch or bring their lunch from home. Alana surveyed every third student who entered the lunchroom and determined that 53% of students prefer to bring lunch from home. Ramiro surveyed every other student in line to buy lunch, and found that only 14% of students prefer to bring their lunch from home.

likely to result in a biased sample.