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Estimating Population Sizes

Discussion in 'Mathematics' started by elrond, Jun 22, 2011.

  1. Hi,

    I am teaching Edexcel Unit 1 and a little GCSE Statistics to a top set Y9 class currently (KS3 work all tied up) and having never taught Stats at all I am little unsure as to what grade things are.

    Anyone let me know what grade being able to estimate population sizes using capture/recapture comes in at?

    I can teach it, but I'm damned if I know what grade it all is!

    Thanks in advance
  2. I'm going out on a limb here as (i) OCR do not offer GCSE Statistics and (ii) I don't think grade/level tariffs exist for Stats that isn't in 'maths' - but:
    Inverse proportionality is approximately grade A; solving equations with fractions varies from B to A* depending on where the x's are and how complicated it is - and these end up with fairly straightforward 200/x = 14/200 type equations.
    So on balance I'd say B-ish, but take that with a pinch of salt!
  3. ... that's an upward "ish", rather than a downward one...

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