Elasticity of The Learning Curve or Experience Curve Ted Mitchell.

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Presentation transcript:

Elasticity of The Learning Curve or Experience Curve Ted Mitchell

As our experience in solving a particular type of problem accumulates, the cost of getting the problem done decreases

Elasticity of Learning is the percentage improvement to be expected for a 1% increase in our experience. For example if our Elasticity of Learning is , then when the total history of production increases from by 1%, then we expect the variable cost per unit will drop by 0.415%

Example problem Forecasted Unit Sales = 500,000 pairs Cumulative Sales to Last Period = 800,000 The learning curve is estimated to be V = 7500Q What is the forecasted cost per unit?

Exercise Forecasted Unit Sales = 500,000 pairs Cumulative Sales to Last Period = 800,000 The learning curve is estimated to be V = 7500Q What is the forecasted cost per unit? V = 7500(1,300, ) V = $21.77 per pair

Cumulative Quantity Cost Per Unit 300,000600,000 1,200,0002,400,000 $40 $30 $16.88 $22.50 V = 7500Q V = 7500(1,300, ) V = $21.77 per pair

Naming The Learning Curve Learning Curves are often named after the percentage decrease in cost every time the cumulative production doubles At ∑Q = 300,000 the cost is $40 per pair At ∑Q = 600,000 the cost is $30 per pair % decrease is (30-40)/40 = -10/40 = -25% Game has a 25% learning curve.

Estimating the Future cost of making the shoes is easy if somebody gives you the formula for the learning curve that has been statistically estimated from a long history of observations

How you estimate the rate of improvement from two observations? In period 4 you had a total production history of 1,300,000 units and the variable cost per unit was $21.77 In period 5 you sold 26,000 more units so that production history increased to 1,326,000 units and the cost per unit dropped to $21.59 You are forecasting sales of 500,000 units in period 6 what is your estimated cost per unit in period 6?

Period 4Period 5∆% change from period 4 Variable Cost per Unit, V $ $ % Cumulative Quantity, ∑Q 1,300,0001,326,00026,0002% Point Elasticity of Learning %∆V/%∆∑Q = 0.084%/2% =

Variable Cost per Unit, V Cumulative Quantity, ∑Q 1,300,000 $ ,326,000 $21.59 Point Elasticity = %∆V/%∆∑Q Point Elasticity = %∆V/%∆∑Q

You are planning on selling 500,000 in period 6! That represents a percentage increase in the history of production (experience) 500,000/1,326,000 = 37.7% increase The estimated point elasticity is The decrease in cost 37.7% x = 15.8% decrease in variable cost Current Cost is $21.58 Period 6 = $ %(21.58) = $18.17

Compare our simple forecast of a variable cost of $18.17 for period 6 To the correct forecast provide by the My estimated Learning Curve Equation V = 7500 (1,826, ) = $18.90

Cumulative Quantity Cost Per Unit 300,000600,000 1,200,0002,400,000 $40 $30 $16.88 $22.50 V = 7500Q Our Simple Estimate of Point Elasticity = Statistical Estimate using many observations

Variable Cost per Unit, V Cumulative Quantity, ∑Q 1,300,000 $ ,326,000 $21.59 Point Elasticity = 0.84%/2% = Point Elasticity = 0.84%/2% = Accuracy of a point elasticity depends on small % changes

For larger % changes use the Arc Elasticity for better accuracy

Period 4Period 5∆% change from the minimum Variable Cost per Unit, V $ $ % Cumulative Quantity, ∑Q 1,300,0001,326,00026,0002% Arc Elasticity of Learning %∆V/%∆∑Q = 0.834%/2% = Closer to the actual

Remember the Denominator is KEY (X 6 –X 5) X5X5 (Y 6 -Y 5 ) Y5Y5 = %∆X %∆Y = Point Elasticity of Y

Remember ∆X X5X5 ∆Y Y5Y5 = %∆X %∆Y = Point Elasticity of Y

Remember ∆X X5X5 ∆Y Y5Y5 = Y 5 (∆X) X 5 (∆Y) = Point Elasticity of Y

Remember to Calculate the Arc Elasticity Based on the Minimum Denominator

Remember The Minimum (X 6 –X 5) X min of 5,6 (Y 6 -Y 5 ) Y min of 5,6 = %∆X %∆Y = ARC Elasticity of Y

Remember The Minimum (X 6 –X 5) X min of 5,6 (Y 6 -Y 5 ) Y min of 5,6 = Y min of 5,6 (∆X) X min of 5,6 (∆Y) = ARC Elasticity of Y

Remember The Minimum (X 6 –X 5) X min of 5,6 (Y 6 -Y 5 ) Y min of 5,6 = Y min of 5,6 (∆X) X min of 5,6 (∆Y) = ARC Elasticity of Y Impact of ∆X Impact of ∆Y

Variable Cost per Unit, V Cumulative Quantity, ∑Q 1,300,000 $ ,326,000 $21.59 Impact of the Change in Cost Impact of the Change in Quantity

The Elasticity of Learning is the percentage decrease in variable cost that can be expected for a 1% increase in the total history of quantity built

Add Another Index to the List Used as a Measure of Sensitivity The Elasticity of Price (aka Demand elasticity) The Elasticity of Advertising The Elasticity of Sales Force The Elasticity of Markup The Elasticity of Marketing Return on Expense The Elasticity of The Learning Curve

Any Questions on The Elasticity of Experience?