If you enjoy this type of post or personal economics see the entire series here. Basically, humans must make decisions about what they will consume based on the resources that are available.
Demand Curve Demand Curve Demand curve is the graphical representation of the demand schedule. Demand curve is obtained by plotting a demand schedule on a graph.
As discussed earlier, demand curve slopes downward from left to right. It has a negative slope. It shows there is inverse relationship between price and quantity demanded of a commodity.
Again, as discussed earlier, Demand curve can be both Linear or Non-linear - If the Demand Curve is Non-linear then the eaquation of Demand is as follows: Understanding Variation of Demand Variation in Demand Expansion and Contraction of Demand When demand changes due to change in price of that commodity then the phenomenon is known as variation Theory of demand expansion or contraction in demand whereas when demand changes due to other factors, that is known as change in demand.
When we say the variation in demand takes place in the market for a particular product or service means this phenomenon occurs that is rise or fall in demand only because of change in its price. Here consumer remains on the same demand curve. He shifting up or down on the same demand curve as shown in dig.
Change in Demand When we say the change in demand takes place in the market for a particular product or service means due change in its other factors like income, taste, preferences etc and not because of its price.
Thus due to rise or fall in income of a consumer or change in preferences, taste etc there is rise or fall in demand for a commodity or services. Here quantity demanded of a commodity is more or less at same or higher or lower price. Here consumer shift on higher demand curve to the right or lower demand curve to the left.
This phenomenon is known as Change in Demand which is accompanied by increase and decrease in demand. Why the Demand Curve is Downward Sloping?
Why does the demand curve slope downward from Left to Right? The reasons behind the law of demand and the shape of demand curve are following. Income Effect When price of a commodity falls, real income i. So our rational will consume more of relatively cheaper.
Such increase in demand due to increase in real income is called as income effect. Substitution Effect When price of commodity falls, its becomes relatively cheaper compare to its other close substitutes Rational consumer will definitely buy more units of relatively cheaper good than relatively dearer whose price has remain same to maximize the satisfaction.
On account of this factor is known as substitution effect. Diminishing Marginal Utility This also responsible for the for the increase in demand for a commodity when its price falls.
When a person buys a commodity he exchanges his money income with the commodity in order to maximize his satisfaction. He continues to buy goods and services so long as marginal utility of money is less than marginal utility of commodity. It positively slopes upward from left to right in case of inferiorGiffen or complimentary goods.Theory of Demand Demand is a schedule representing the quantities of a good or service the consumer is able and willing to buy over a given range of prices.
It reflects the way consumers react when faced with variations in the price of a good. Theory of Demand: Meanings of Demand: The word 'demand' is so common and familiar with every one of us that it seems superfluous to define it.
By demand for goods and services economists essentially mean is willingness as well as ability of the consumer in procuring and consuming the goods and services. Thus, demand for a commodity or service is dependent upon (a) its utility to satisfy want or desire (b) capability of the prospective consumer to pay for the good or service.
Theory of Demand ECON Lecture 7 Tianyi Wang Queen™s Univerisity Winter Tianyi Wang (Queen™s Univerisity) Lecture 7 Winter 1 / Intro Note: Quiz 1 can be picked up at Distribution Center. Second Quiz covers: Preferences, Budget and Optimal Choices.
Consumer Demand Theory The Simple Economics Series is a collection of information that explains, in plain English, the fundamentals of personal economics and theory.
If you enjoy this type of post or personal economics see the entire series here. Theory of Demand: Meanings of Demand: The word 'demand' is so common and familiar with every one of us that it seems superfluous to define it.