Statistics Inquiry

PPDAC Inquiry In Pairs
You have to come up with a logical approach and conclusion (using the PPDAC cycle) to the following idea...

I want to know if Holden Commodores or Ford XR6's are really loved more by their owners. 

Problem (was given last post)

Plan - In your pairs you have to come up with some definitions...

• How will you know you're comparing fairly (ie not all old Fords versus new Holdens)?
• How will you quantify the "love" (this is possible to do sort of). 
• How will you find your data?
• What will your data be (discrete/counted or continuous/measured)?
• How many pieces of data will you need?

Data - One of the two of you will need to write down all of the data (probably in order), maybe rounded, perhaps using a table and or a stem n leaf graph.

Analysis - Finding the mean, median, mode, range, upper and lower quartiles.  Doing some graphs - box n whiskers, maybe scatterplot, maybe bar graph.

Conclusion - you will need to make a presentation (poster or powerpoint) to the rest of the class which will answer whether owners love Holdens or Fords more.   

Marks will be allocated for...

• Communicating your thinking clearly (that you've appreciated that the results will vary).
• Working well with your time (avoiding any last min rush jobs).
• Presentation (make it good).
• Use of the PPDAC headings in your presentation (see below for more hints). 
• Mistake free working (showing working out). 
• Teamwork (not just relying on one person). 
• Thinking outside the square (big picture ideas). 

You will have four class periods in which you can do this inquiry project.  Presentations will be on Friday 5th September.