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Delete - Last Modified By: dna at 18/12/2013 12:19:47 PM
The following link takes you to the first of a series of Khan Academy sessions on 'measures of central tendancy'. It would be worthwhile completing the entire section.
Edit Delete - Last Modified By: dna at 18/12/2013 12:26:10 PM
The following site includes some simple examples.
Edit Delete - Last Modified By: dna at 18/12/2013 12:34:45 PM
The following two links are from the BBC website. Quite good resources!
Edit Delete - Last Modified By: dna at 18/12/2013 12:32:40 PM
Edit Delete - Last Modified By: dna at 4/02/2014 1:30:34 PM
Edit Delete - Last Modified By: dna at 4/02/2014 1:31:28 PM