Investigative Questions Year 9 Statistics

What is an investigative question in statistics?

• A) A question that can be answered with a simple 'yes' or 'no.'

• B) A question that explores relationships between variables.

• C) A question that only asks for numerical data.

• D) A question that is always subjective.

Which of the following is an example of a good investigative question?

• A) How many hours do you sleep each night?

• B) What is the average height of Year 9 students at our school?

• C) Do you like ice cream?

• D) Is 5 a prime number?

What type of data is most often used to answer an investigative question?

• A) Numerical data only

• B) Categorical data only

• C) Both numerical and categorical data

• D) Qualitative data only

Which of the following would be an appropriate investigative question for comparing two groups?

• A) What is the most popular color among Year 9 students?

• B) How does the average test score of Year 9 boys compare to Year 9 girls?

• C) How many students are in Year 9?

• D) What is the length of the school day?

Why is it important to have a clear investigative question before collecting data?

• A) It ensures that you collect only numerical data.

• B) It helps you focus on what data to collect and how to analyze it.

• C) It allows you to avoid doing any analysis.

• D) It ensures that your results are always accurate.

What is the mean of the following set of numbers: 5, 10, 15, 20, 25?

What is the mode of this data set: 4, 8, 6, 4, 9, 10, 4, 7?

How do you calculate the range of a data set?

Given the data set: 12, 18, 14, 16, 20, 12, 18, what is the median?

Which of the following data sets has a mode of 7?