\( \DeclareMathOperator{cosec}{cosec} \)
Sign In | Starter Of The Day | Tablesmaster | Fun Maths | Maths Map | Topics | More
Here are some specific activities, investigations or visual aids we have picked out. Click anywhere in the grey area to access the resource.
Here are some exam-style questions on this statement:
Click on a topic below for suggested lesson Starters, resources and activities from Transum.
This Bicen Maths video clip shows everything you need to memorise on Measures of Spread for A Level Maths.
If you use a TI-Nspire GDC there are instructions for calculating statistics from a list which is useful for this topic.
Some of the key formulae related to central tendency and dispersion:
$$ \text{Population Mean} (\mu) = \frac{\sum_{i=1}^{N} x_i}{N} \\ \text{Sample Mean} (\bar{x}) = \frac{\sum_{i=1}^{n} x_i}{n} \\ \text{Population Variance} (\sigma^2) = \frac{\sum_{i=1}^{N} (x_i - \mu)^2}{N} \\ \text{Sample Variance} (s^2) = \frac{\sum_{i=1}^{n} (x_i - \bar{x})^2}{n-1} $$This video on Mean, Standard Deviation and Variance is from Revision Village and is aimed at students taking the IB Maths AA SL/HL level courses.
How do you teach this topic? Do you have any tips or suggestions for other teachers? It is always useful to receive feedback and helps make these free resources even more useful for Maths teachers anywhere in the world. Click here to enter your comments.