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Hi there,
I’m on question 262 of the BPP kit. Could you please let me know how they work out the learning rate as a calculation of 79% because i am clueless.
Thank you.
Hi,
Is anybody there?
Where i’m stuck is how they arrive (as per the BPP revision kit) at the answer when using a calculator as below:
Cumulative average time per batch: 22,000 / 16 = 1,375
1,375 = 3500 r4
r = 0.79 or 79%Could someone please help? There was another question or two similar to this and i’m just not sure how they arrive at such an answer using a calculator, It’s not that clear if you’re not too savvy with using calculators.
Many thanks.
EllisI assume that you are happy with arriving at
1375 = 3500 r^4
(it is r^4 which is r to the 4th power)
If you divided both sides by 3500, then you get
r^4 = 1375/3500 = 0.3929
So, r = fourth root of 0.3929 = 0.79 (or 79%)
How you calculate the 4th root depends on your calculator, but you should remember from school that getting the fourth root is the same as taking 0.3929 to the power 1/4 i.e. 0.3929 to the power 0.25.
(Have you watched my free lectures on learning curves? The lectures are a complete free course for Paper PM and cover everything needed to be able to pass the exam well.)
Hi John,
I’ve got it! I didn’t have the actual r^4 symbol on my calculator so watched a couple of Youtube videos to find out how i can make use of the calculator i have and found an answer.
I have watched your lecture videos, and the one on learning curves, thanks. They were helpful, but i’m quite rusty with all these calculations so it’s taking me a little longer!
Thanks again – answer attained!
Ellis
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