1. avatar says

    June 2013 Q3 Learning curve

    Y = axb
    45 x 100–0·152 = 22·346654 minutes
    Total time for 100 units = 2,234·6654 minutes.

    Can you please help me how to calculate the answer of 22.346654?

    • Profile photo of John Moffat says

      It really depends on what calculator you have – different calculators do it different ways.
      I guess you have watched my lecture on learning curves, because there I write down which calculator keys I press.
      However, in case you missed it, this is what I do on my calculator!

      100 x^y 0.152 +/- = (at that stage the calculator is showing 0.49659)
      I then multiply by 45 and get 22.346654

  2. avatar says

    Mr Moffat missed a zero when using b. Well we won’t hold that against him as his brilliant explanations have more than compensated for this, but the examiner will perhaps deduct 0.5 marks from us so be careful in the exams.

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