Statistical Questions and Variability

The video tutorial introduces the concept of statistical questions, emphasizing the importance of variability in answers. It provides examples to differentiate between statistical and non-statistical questions, such as age-related queries and weather comparisons. The tutorial also discusses how to identify statistical questions and analyze survey results. It concludes with a knowledge check to reinforce understanding.

What is a key characteristic of a statistical question?

• It is always about numbers.

• It expects variable answers.

• It requires a yes or no response.

• It has only one possible answer.

Which statement is true about statistical questions?

• They have a fixed answer.

• They are always about percentages.

• They require a range or average to answer.

• They always have a numerical answer.

Which of the following is a non-statistical question?

• How old are the students in this room?

• What is your favorite color?

• How many students are in the class?

• What is the average age of students in the school?

Why is the question 'Does it rain more in Wachi or Quincy?' considered statistical?

• It has a single answer.

• It depends on the time of year.

• It is a yes or no question.

• It is about a specific location.

Which question is most likely to produce results about favorite stores at the mall?

• What is your favorite type of store to shop in?

• Do you like shopping at the mall?

• What is the name of the last store you visited?

• How often do you visit the mall?

What makes the question 'What time do most people eat their lunches?' statistical?

• It is about a specific group of people.

• It is a yes or no question.

• It varies based on different factors.

• It has a fixed answer.

Why is the question 'What do seventh graders prefer to eat for lunch?' considered statistical?

• It varies based on individual preferences.

• It has a single answer.

• It is about a specific meal.

• It is a yes or no question.

In a survey about practice time, which question is most likely to have produced the given results?

• What is the average practice time per week by your sport?

• How much time do you spend on homework?

• Is practice time longer on Mondays than Tuesdays?

• Which sport practices the most?

What can be inferred from Jessica's survey about tree purchases?

• Jessica's survey was about the most popular tree.

• Jessica's survey included only one landscaping business.

• Jessica asked about all types of plants.

• Jessica surveyed only customers who purchased trees.

What is the main focus of statistical questions in surveys?

• To collect numerical data only.

• To confirm a hypothesis.

• To understand variability in responses.

• To find a single correct answer.