A statistical question is a question that you can do research on and collect data on. The data will also vary.
A non-statistical question is that you don't do research on and collect data on. You will only have one answer.
In the question, "At the Minnesota Zoo, do spider monkeys typically weigh more than owl monkeys?" We can collect data and do research on this question. Whether spider monkeys or owl monkeys weigh more are unknown and the weight will vary throughout the experiment.
A number is equal to the sum of twice the number and negative three. ... Three less than a number is translated as "x – 3." The reverse of that, "3 – x," would be a number less than 3.