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Exam 7: Extension: Learning Curves

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Question 21

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On a log-log graph, learning curves appear as:

A) upward-curving lines.
B) downward-curving lines.
C) straight lines.
D) lines which increase at a decreasing rate.
E) lines which decrease at a decreasing rate.

F) A) and E)
G) A) and D)

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Question 22

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A manager wants to analyze the learning curve associated with producing one of his company's products. Accordingly, he has gathered the following data: $\begin{array} { | l | l | } \hline \text { UNIT PRODUCED } &{ \text { TIME REQUIRED } } \\\hline \text { Second } & 5 \text { hours } \\\hline \text { Fourth } & 4 \text { hours } \\\hline\end{array}$ Approximately how long will it take to produce the fifth through tenth units?

A) 15 hours
B) 16 hours
C) 18 hours
D) 20 hours
E) 21 hours

F) A) and E)
G) All of the above

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Question 23

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An 80 percent learning curve means that with each doubling of repetitions there will be a 20 percent decrease in time per unit.

If we have never made the first unit but only think we know how much the labor time will be, we cannot draw a learning curve.

A job has an 80 percent learning curve. The second unit required 12 hours to complete. Approximately how many hours will be devoted to the first five units (including those already completed) ?

A manager wants to analyze the learning curve associated with producing one of his company's products. Accordingly, he has gathered the following data: $\begin{array} { | l | l | } \hline \text { UNIT PRODUCED } & { \text { TIME REQUIRED } } \\\hline \text { Second } & 5 \text { hours } \\\hline \text { Fourth } & 4 \text { hours } \\\hline\end{array}$ Approximately how long did it take to produce the first four units?

Negotiated purchasing results in lower unit costs for smaller quantities.

Once production is underway and the learning curve effect is occurring, successive changes made to the production process will cause the time per unit to:

Learning curves generally apply to situations in which there is a high degree of human involvement and tasks are fairly repetitive.

The decrease in time between the second and fourth units will be equal to the decrease in time between the first and second units.

Suppose the first unit required 800 hours and the second unit required only 680. Which of the following times for the fourth unit would be consistent with a true learning curve scenario?

Learning curves are used primarily for mass production applications.

The more __________ a task, the less likely it is that a substantial learning curve will be in effect.

Sally suspects strongly that there is a learning curve associated with solving problems assigned for operations management. She notes that it took her approximately 33 minutes to solve the first problem and 17 minutes to solve the fifth problem. (A) Estimate Sally's learning percentage. (B) Using your answer from part A, estimate how long it will take Sally to finish the three remaining problems.

A manager wants to analyze the learning curve associated with producing one of his company's products. Accordingly, he has gathered the following data: $\begin{array} { | l | l | } \hline \text { UNIT PRODUCED } & { \text { TIME REQUIRED } } \\\hline \text { Second } & 5 \text { hours } \\\hline \text { Fourth } & 4 \text { hours } \\\hline\end{array}$ Approximately how long will it take to produce the 10^th unit?

An order we just received has a 90 percent learning curve associated with it. The second unit of the total 25-unit order had a unit time of 36 minutes. What will the total time be for the entire order (all 25 units)?

In which of the following managerial activities would learning curves probably be the least useful?

To which of the following challenges are learning curves important considerations?

When are learning curves most relevant to managerial decision making in mass production settings?

The learning curve is a basic tool for mass production-type activities because it can deal with large volumes of output.