median
don steward
mathematics teaching 10 ~ 16

Sunday, 15 January 2012

regression a la Dan Meyer

Dan Meyer has a fascinating approach to linear regression - observing how long a toaster takes to pop up for various settings

there's a film clip of nine toasters, on settings 1 to 9

a timer enables you to see how much time has elapsed











apart from the first setting there seems to be a good linear relationship between the setting and time taken to pop-up:


what is the straight line graph rule?

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