Didn't Finish the paper

[cairo]

Always been a bit confused by this standardisation by same-month business. So does that mean that if all the September children happen to be stupid and all the August babies put in a stellar performance, the September-borns will need a lower score? Surely not.

[mike1880]

No. Saying that each month is effectively competing only against each other is a slight over-simplification. Loosely speaking (and this is another over-simplification) the age standardisation will be determined by the overall trend of performance across the year.

Mike

[cairo]

Lordy, lordy.

Thank goodness we live in an age of computers eh? And no-one (presumably) is manually having to calculate these normal distributions, effects of age-standardisation and adding in a bit of fairy dust for good measure!