Learning curves

The average time per unit if we make 2 units is (8 + 6)/2 = 7 hours. So the learning rate is 7/8 = 87.5%

Thank you!

You are welcome :-)

Please, explain question from Mock exam: Company produce new product. 1 unit - 25 hours. Learning rate- 75% How long will it take to produce 7 additional units? My solution: Y=25*7^(log (0.75)/ log 2) =11.15 hours per unit. Thereof, 11.15*7 = 78.04 hours! But the wright answer is another :(

Yes - it is because your answer is wrong. If you have produced 1 unit and then produce another 7, then you will have produced 8 in total. The time for the next 7 is the total time for 8 less the time taken for the first. (And because it is 8 in total, you can use the doubling rule instead of the formula - however the answer will be the same.) You might find the free lecture on learning curves useful - I go through an almost identical example in the lecture.

Thanks! I uderstood doubking method.

You are welcome :-)