Measures of spread (Year 9)
Video Images


This video is for subscribers only.

To view this video please support me by purchasing a (very cheap!) years access.

Videos in this series
Please select a video from the same chapter
Video Images
Video Images
Video Images
Video Images
Want to skip to the best bits?
Gain access to chapters by taking out a (very reasonable and cheap!) one year plan
Measures of spread (Year 9)
Probability and statistics
Year 9
This video takes a look at the ways we can measure the spread of data about the median. It first looks at the range. It looks at how to calculate it and why it's not very useful when there are outliers. It moves on to look at the Interquartile Range. It shows how to find the IQR and what each of the parts mean. It also looks at how the IQR removes the problems created by the outlier. This video is part of the Year 9 series on Mathematics.
Published: March 5, 2019
Length: 12 mins and 01 seconds
Lesson notes

Lesson notes for this video are for subscribers only. Sorry! To gain access, please consider supporting me by taking out a (very reasonable and cheap!) one year plan by [clicking here]
Exam resources

There are currently no associated exam questions for this topic.

Video tags

interquartile range year 9 interquartile range statistics good maths websites IQR finding the interquartile range lower quartile upper quartile and lower quartile upper quartile statistics finding the range what is an outlier outlier Year 9 maths measures of spread measures of spread statistics measures of spread and center

Where videos relate to VCE and I have used VCAA questions the following should be noted:
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