Year 7 Stats Plan

Which of these is a good statistical investigation question?

• What is your name?

• Do people with bigger feet run faster?

• How many hours do students in Room 12 sleep on a school night?

• Are bananas yummy?

Every statistical investigation needs a question.

• True
• False

Sort these into categorical or numerical variables.

Groups:

(a) Categorical

,

(b) Numerical

• Year level

• Favourite sport

• Shoe size

• Number of pets

• Eye colour

• Height in cm

Write one investigative question you could ask about your class.

What is a variable?

• A person’s name

• Something that can change or vary

• A maths symbol

• A type of graph

A good statistical question is one that can be answered by collecting and analysing __________.

Match the correct variable to its best measurement method:

• Stopwatch

• Favourite subject

• Sleep diary

• Height

• Measuring tape

• Hours of sleep

• Survey

• Time to run 100m

It’s okay to collect data from people without telling them why.

• True
• False

Put these steps of a statistical investigation in order:

• Ask a question

• Collect the data

• Plan how to collect data

• Share what you found

• Analyse the data

Which of the following are examples of numerical data?

• Number of siblings

• Height in centimetres

• Favourite colour

• Hair type