Understanding Economic Elasticity and Production Theory
Elasticity Fundamentals
Elasticity measures how the quantity demanded of a good changes in response to a 1% change in its price. Goods that are not basic necessities and have many substitutes tend to be more elastic. This concept is used to determine pricing strategies and maximize total revenue.
- Goods are more elastic in the long term.
- Elasticity depends on necessity; if the price decreases, the quantity demanded increases.
Inelastic Goods
Inelastic goods are those considered urgent or basic. Even if the price rises, the quantity purchased changes very little.
Types of Elasticity
- Arc Elasticity: Data from reality, measured from one point to another.
- Point Elasticity: The elasticity at a specific point on the curve.
Coefficients of Elasticity
- Elastic: The coefficient is greater than unity (E > 1).
- Inelastic: The coefficient is less than unity but greater than zero (0 < E < 1).
- Unitary: The coefficient is equal to unity (E = 1).
Theoretical Cases
- Perfectly Inelastic: The coefficient is zero.
- Perfectly Elastic: The coefficient is equal to infinity.
Note: The burden of a highly elastic tax is paid by the producer, whereas if the consumer is inelastic, the consumer bears the burden.
Cross and Income Elasticity
- Cross Elasticity: Measures how the quantity of one asset varies in response to a 1% variation in the price of another. It identifies the relationship between two types of goods.
- Income Elasticity: Measures how the quantity demanded changes as income changes by 1%.
- Positive (+): Increased income leads to increased consumption (Normal goods).
- Negative (-): Increased income leads to decreased consumption (Inferior goods).
- Zero (0): Income changes do not affect consumption (Neutral goods).
Short-Term Production
Short-term production occurs when one factor is variable while others remain fixed, typically depending on fixed capital (K) and labor (L).
- Marginal Product of Labor (MPL): Indicates how production varies by hiring an additional person.
- Average Product of Labor (APEL): Determines the average per capita production.
If MPL > APEL, the average increases, and vice versa.
Stages of Production
- From the initial point to where MPL equals APEL.
- From the end of stage one until MPL reaches zero.
- A point where technical interference prevents further production with existing staff; firms avoid this stage.
Firms avoid stage one because they can grow by hiring more staff. Firms aim to operate in stage two, where MPL is decreasing.
Cost Analysis
- Marginal Cost (MC): The cost to produce one additional unit.
- Average Cost (AC): The average unit cost of production.