Standardisation and the 68–95–99.7% rule
The normal distribution
Mathematical Methods: Units 3 and 4
MaffsGuru Logo Sitting
Videos in this series
Please select a video from the same chapter
Video Images Video Images Video Images


I think I might have taken a bit of a liberty ... or creative license here with calling the 68-95-99.7% rule the MaffsGuru rule, but please bear with me! Saying 68-95-99.7% Rule is rather long winded don't you think! So ... It's time for a change. This video takes a look at how to use the Normal Curve to standardise scores. Yes! It's time we look at what Z-Scores are and how we can use them to compare data. The video looks at where the Z Score formula comes from and how to use it to Standardise Scores. It uses examples of test scores in a school and shows how to use the Z Scores to compare to see who was doing better. There are great exam tips in the video too - like ensuring that you always draw a normal distribution when answering questions. As is normal, there is also a smattering of bad puns and cheesy jokes to keep the lesson going. There are also a number of worked examples to show how all the theory ties together.
VCE Maths exam question content used by permission, ©VCAA. The VCAA is not affiliated with, and does not endorse, this video resource. VCE® is a registered trademark of the VCAA. Past VCE exams and related content can be accessed at

There are no current errors with this video ... phew!

There are currently no lesson notes at this time to download. I add new content every week.
Video tags

standardisation standardization normal curve standard normal distribution probability standard normal distribution z score normal distribution probability normal distribution and z scores z scores and normal distribution z scores z score z scores explained 68 95 and 99.7 rule 68 95 and 99.7 rule explained 68 95 99 rule z score Methods 3 and 4 VCE Maths