Question

In: Operations Management

Consider the data in table below which shows the time required to produce a particular item....

Consider the data in table below which shows the time required to produce a particular item. Using that data, calculate the learning rate associated with this product.

Units

Labor Hrs

5

155

9

147

13

137

17

97

25

72

Solutions

Expert Solution

Learning equation is Tn = T1*rln(n)/ln(2), where Tn represents the time required to produce nth item and r is the learning rate, ln() represents natural logarithm functon

T5 = T1*rln(5)/ln(2)

T9 = T1*rln(9)/ln(2)

T9/T5 = T1*rln(9)/ln(2) / (T1*rln(5)/ln(2) )

= r(ln(9)/ln(2) - ln(5)/ln(2)

= r0.848 ---(1)

T9/T5 = 147/155 = 0.9484 ---(2)

Equating (1) and (2)

r0.848 = 0.9484

Solving for r, we get, r = eln(0.9484)/0.848 = 0.9394

_____________________

Similarly, T13/T9 = r(ln(13)/ln(2) - ln(9)/ln(2)) = r0.5305

T3/T9 = 137/147 = 0.932 or

r0.5305 = 0.932

Solving for r, we get, e(ln(0.932)/0.5305) = e-0.1327 = 0.8757

____________________________

Similarly, T17/T13 = r(ln(17)/ln(2) - ln(13)/ln(2)) = r0.3870

T17/T13 = 97/137 = 0.708 or

r0.3870 = 0.708

Solving for r, we get, r = e(ln(0.708)/0.3870) = e-0.8921 = 0.4098

______________________________

Similarly, T25/T17 = r(ln(25)/ln(2) - ln(17)/ln(2)) = r0.5564

T25/T17 = 72/97 = 0.7423

r0.5564 = 0.7423

Solving for r, we get, r = e(ln(0.7423)/0.5564) = e-0.5356 =  0.5853

Average learning rate associated with the product is determined as the average of the 4 learning rates as calculated above

Average learning rate = (0.9394+0.8756+0.4098+0.5853)/4 = 0.7025


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