Exercises: Statistical Questions
Apply what you know about statistical and non-statistical questions.
Warm-Up: Review What You Know
These problems review key vocabulary before you begin.
When you collect information from a group of people or objects, that information is called ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ .
Which of the following is an example of collecting data?
Classify Each Question
For each question, decide: is it statistical or non-statistical?
"How old are the students in this school?" Is this a statistical or non-statistical question?
"How old am I?" (asked by one specific person) Is this a statistical or non-statistical question?
"What is ?" Is this a statistical or non-statistical question?
"How many hours per night do 6th graders in this school typically sleep?" Is this statistical or non-statistical?
"How fast do cars travel on Highway 9 during the morning rush hour?" Is this statistical or non-statistical?
Mixed Practice
Apply what you know about statistical questions in different ways.
Which of the following is the best definition of a statistical question?
"Will it rain tomorrow?" Is this statistical or non-statistical?
"How tall is the Eiffel Tower?" is a ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ question because it has one specific answer. "How tall are the students in this class?" is a ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ question because different students have different heights.
Which revision correctly turns "How many pages does this book have?" into a statistical question?
"What temperature is it outside right now at this school?" Which revision makes this a statistical question?
Apply Your Knowledge
Read carefully and use what you know about statistical questions.
A student, Leo, is designing a class survey. He has three questions: (1) 'How many siblings do you have?' (2) 'What is ?' (3) 'Who is the principal of our school?'
Which of Leo's questions is statistical?
Mia wants to find out about homework habits in her school. She writes: 'Do students do homework?'
Explain whether Mia's question is statistical or non-statistical. Then rewrite it as a clear statistical question.
Find the Mistake
Each problem shows a student's reasoning that contains an error. Find and explain the mistake.
Jordan classified this question as statistical: "What is ?"
Jordan's reasoning: "It involves numbers, and statistics is about numbers."
What is wrong with Jordan's reasoning?
Priya classified "Will it snow on my birthday?" as a statistical question.
Priya's reasoning: "Nobody knows the answer for sure, so the answer could be different from what we expect."
What is wrong with Priya's reasoning?
Challenge Problems
These problems require deeper thinking about statistical questions.
A student says: 'If I ask 100 people what is, I'll get different answers because some people will make mistakes. So it is a statistical question.' Do you agree? Explain why or why not.
Write one original statistical question and one original non-statistical question about the same topic (your choice of topic). Explain clearly why each one is or is not statistical.