This article is about what is inelasticity in economics. In the realm of economics, the notion of inelasticity unveils a fascinating aspect of market dynamics. It sheds light on goods and services whose demand or supply remains staunch, indifferent to the whims of pricing fluctuations.
What Is Inelasticity in Economics?
In economics, inelasticity refers to the situation where the quantity demanded or supplied of a good or service is not affected by changes in its price. In other words, inelastic goods and services have a constant demand or supply regardless of how much they cost.
For example, if the price of insulin, a life-saving medication for diabetics, increases by 10%, the demand for insulin will not decrease significantly, because people who need it will still buy it regardless of the price. Similarly, if the price of insulin decreases by 10%, the demand for insulin will not increase significantly, because people who do not need it will not buy it just because it is cheaper. Therefore, insulin is an example of an inelastic good.
The opposite of inelasticity is elasticity, which refers to the situation where the quantity demanded or supplied of a good or service changes significantly when its price changes. Elastic goods and services have a variable demand or supply depending on how much they cost.
For example, if the price of movie tickets increases by 10%, the demand for movie tickets will decrease significantly, because people who want to watch a movie may choose other alternatives, such as streaming services or video games. Similarly, if the price of movie tickets decreases by 10%, the demand for movie tickets will increase significantly, because people who were not interested in watching a movie may decide to go to the theater just because it is cheaper. Therefore, movie tickets are an example of an elastic good.
How to Measure Inelasticity and Elasticity?
Economists use a concept called price elasticity of demand to measure how responsive the quantity demanded of a good or service is to changes in its price. The formula for price elasticity of demand is:
Price elasticity of demand = % change in quantity demanded / % change in price
The value of price elasticity of demand can range from zero to infinity. A value close to zero means that the demand is very inelastic, meaning that it does not change much when the price changes. A value close to infinity means that the demand is very elastic, meaning that it changes a lot when the price changes.
A value of exactly zero means that the demand is perfectly inelastic, meaning that it does not change at all when the price changes. A value of exactly infinity means that the demand is perfectly elastic, meaning that it changes infinitely when the price changes.
For example, if the price of gasoline increases by 20% and the quantity demanded of gasoline decreases by 5%, then the price elasticity of demand for gasoline is:
Price elasticity of demand = -5% / 20% = -0.25
This means that gasoline is an inelastic good, because its demand does not change much when its price changes.
Similarly, if the price of coffee decreases by 10% and the quantity demanded of coffee increases by 40%, then the price elasticity of demand for coffee is:
Price elasticity of demand = 40% / -10% = -4
This means that coffee is an elastic good, because its demand changes a lot when its price changes.
Bottom Line
In this article, we have discussed what is inelasticity in economics. Understanding the elasticity or inelasticity of goods and services is key in navigating the complex dance between pricing and demand in any market.
