In a poll of students at the basketball championship, 82% of the students say that basketball is better than football.

explain why it is not a valid conclusion to say that basketball is more popular than football at the school.

suggest a better method of determining which sport is more popular.

There could be a lot of factors which may nullify the result of the survey. First, the sampling could be bias in which most of those who were chosen were more inclined to the sport of basketball than football. Therefore, for this to be corrected, there should be a proper way of sampling for the survey responders.