Chapter 05A  Learning Curves
CHAPTER 5A
LEARNING CURVES
Review and Discussion Questions
1.
If you kept any of your old exam grades from last semester, get them out and write down the
grades.
Use Exhibits 5A.4 and 5A.5, loglog graph paper, or a spreadsheet to find whether
the exponential curve fits showing that you experienced learning over the semester (insofar as
your exam performance is concerned).
If not, can you give some reasons why not?
For example, if your scores were;
Exam 1 = 85
Exam 2 = 75
The learning percentage = 75
÷
85 = 88%
Since 88% lies between 85 and 90% on the learning curve exhibit (5A.4), we must interpolate to
find the improvement ratio for the third exam.
It would be .8169
Therefore, exam 3 = .8169 x 85 = 69.4
Suppose, that the reverse was true, that is, the student’s grade is improving.
Exam 1 = 75
Exam 2 = 85
Because improvement curves are usually associated with decreases in some variable over time,
we convert this to a decrease in lost points, i.e., exam 1 = 25, exam 2 = 15.
The learning
percentage is 15/25 = .60.
The number of lost points for exam 3 = 25 x .4450 = 11.1
The grade for exam 3 = 100 – 11.1 = 88.9
Generally, learning curves are used for repetitive tasks.
In other words, doing the same exact task
over and over again.
In this case, new material is covered from one exam to the next.
This
change in material might impact on the learning curve.
56
This preview has intentionally blurred sections. Sign up to view the full version.
View Full Document
Chapter 05A  Learning Curves
2.
How might the following business specialists use learning curves: accountants, marketers,
financial analysts, personnel managers, and computer programmers?
Accountants:
estimating costs
Marketers:
settingselling prices
Financial analysts:
performing a breakeven analysis for purposes of investment decision
making
Personnel managers:
estimating the number of workers required
Computer programmers:
estimating times to write programs
3.
As a manager, which learning percentage would you prefer (other things being equal), 110
percent or 60 percent?
Explain.
Students tend at first glance to erroneously associate higher learning percentages with faster
learning.
Relative to the 110 percent learning rate, strict interpretation of this would mean that
every time output doubles, production time per unit increases by 10 percent.
This is the end of the preview.
Sign up
to
access the rest of the document.
 Spring '11
 none
 Management, Learning curve, $18, $5,381,110 13, $43,126.50 10, $1,021,200 7

Click to edit the document details