Assume you are a project cost engineer calculating the cost of a repetitive activity for your project. There are a total of 20 iterations of this activity required for the project. The project activity takes 2.5 hours at its steady rate and the learning rate is 75%. Calculate the initial output time for the first unit produced, using the learning curve formula:
Y?=ab
b= log decimal learning rate/log 2
I get the log decimal from the chart below (.288), but how do I figure out the value for log2?
Learning Curve Coefficient Table
|
70%
|
75%
|
80%
|
85%
|
|
Unit Rate
|
Unit Time
|
Total Time
|
Unit Time
|
Total Time
|
Unit Time
|
Total Time
|
Unit Time
|
Total Time
|
|
5
|
.437
|
3.195
|
.513
|
3.459
|
.596
|
3.738
|
.686
|
4.031
|
|
10
|
.306
|
4.932
|
.385
|
5.589
|
.477
|
6.315
|
.583
|
7.116
|
|
15
|
.248
|
6.274
|
.325
|
7.319
|
.418
|
8.511
|
530
|
9.861
|
|
20
|
.214
|
7.407
|
.288
|
8.828
|
.381
|
10.485
|
.495
|
12.402
|