median
don steward
mathematics teaching 10 ~ 16

Wednesday, 16 January 2013

central tendency

you might present the set of numbers and ask students to consider (and record) what an 'average' value might be for this set - a representative number, standing for the whole set

these class values can then be compared 

there are several more 'averages' than are normally considered
I think there's some value in introducing this variety before homing in on the more regularly used values
some discussion of which value is 'best' (advantages/disadvantages) might follow the calculations:


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