Question

more than 340 million people visit theme parks each year. do you think it is because of the roller coasters? you can find 624 roller coasters at theme parks in the united states. the fastest coaster can reach 128 mph! if you want to learn about the roller - coaster riding habits of people, which is the best statistical question you could ask those leaving an amusement park? did you ride a roller coaster today? how fast is the coaster you rode today? how many times did you ride a coaster today? how many roller coasters are there at this park?

Explanation:

A statistical question should have variability in the data. "Did you ride a roller coaster today?" is a yes/no question with no variability. "How fast is the coaster you rode today?" may have limited data as not all coasters are ridden at max speed and some may not be ridden. "How many roller coasters are there at this park?" is a factual question. "How many times did you ride a coaster today?" can have different answers (0,1,2,...) showing variability which is good for statistical analysis of riding habits.

Answer:

How many times did you ride a coaster today?