American Market Economy I Flashcards
Efficiency
Efficiency signifies a level of performance that describes using the least amount of input to achieve the highest amount of output. Efficiency refers to the use of all inputs in producing any given output, including personal time and energy. It is a measurable concept that can be determined using the ratio of useful output to total input (O/I). It minimizes the waste of resources such as physical materials, energy, and time while accomplishing the desired output.
Shift Factors of Demand
Forces other than price that affect how much of a good is demanded. A few important shift factors that can cause the demand curve to move and the prices you pay to change are: Disposable income, tastes, prices of other goods, expectations, etc.
Shift Factors of Supply
Forces other than price that affect how much of a good is supplied. A few important shift factors that can cause the supply curve to move and the prices you pay to change are: Changes in the price of raw materials or inputs, changes in technology, changes in supplier’s expectations, and changes in taxes and subsidies.
Elasticity
Elasticity is a measure of a variable’s sensitivity to a change in another variable. In business and economics, elasticity refers the degree to which individuals, consumers, or producers change their demand or the amount supplied in response to price or income changes. It is predominantly used to assess the change in consumer demand as a result of a change in a good or service’s price.
Elasticity - General Equation
[ % change in y ] / [ % change in x ] = Elasticity
Price Elasticity of Demand
Price elasticity of demand (PED or Ed) is a measure used in economics to show the responsiveness, or elasticity, of the quantity demanded of a good or service to a change in its price when nothing but the price changes. More precisely, elasticity gives the percentage change in quantity demanded in response to a one percent change in price. The terms elastic and inelastic are used to describe this. Price elasticities are almost always negative, although analysts tend to ignore the sign even though this can lead to ambiguity. Only goods which do not conform to the law of demand, such as Veblen and Giffen goods, have a positive PED.
Price Elasticity of Demand - Equation
[ % change in quantity demanded ] / [ % change in price ] = Price Elasticity of Demand
Price Elasticity of Demand - Elastic Demand
Elastic demand is when consumers buy significantly more or less of a product when its price changes. It has a value greater than one indicating demand for the good or service is affected by the price. Compare with ‘Inelastic Demand’.
Price Elasticity of Demand - Inelastic Demand
Inelastic demand means that an increase or decrease in price will not significantly affect demand for the product. It has a value less than one indicating that the demand is insensitive to price. Compare with ‘Elastic Demand’.
Price Elasticity of Demand - Determinants
Determinants of price elasticity of demand include: (1) Availability of substitutes: If substitutes are plentiful, then demand should be elastic. (2) Relative percentage of expenditure: If an item takes up a considerable proportion of a consumer’s income, then demand should be elastic; if it takes up a very small amount, then demand should be expected to be inelastic. (3) Amount of time: Consumers can make more adjustments to prices changes over time and, therefore, demand tends to be more elastic as time passes. (4) Necessities or luxuries: Demand for necessities will tend to be inelastic, while demand for luxuries will tend to be elastic.
Income Elasticity of Demand
Income elasticity of demand refers to the sensitivity of the quantity demanded for a certain good to a change in real income of consumers who buy this good, keeping all other things constant. The formula for calculating income elasticity of demand is the percent change in quantity demanded divided by the percent change in income. With income elasticity of demand, you can tell if a particular good represents a necessity or a luxury.
Income Elasticity of Demand - Equation
[ % change in quantity demanded ] / [ % change in income ] = Income Elasticity of Demand
When the average real income of its customers falls from $50,000 to $40,000, the demand for its cars plummets from 10,000 to 5,000 units sold, all other things unchanged. 50% / 20% = 2.5
Income Elasticity of Demand - Normal Good and Necessity Goods
A normal good is one whose demand increases as people’s incomes or the economy rise. A normal good is defined as having an income elasticity of demand coefficient that is positive. Normal goods whose income elasticity of demand is between zero and one are typically referred to as ‘necessity goods’. Compare with ‘inferior goods’.
Income Elasticity of Demand - Inferior Good
An inferior good is a type of good for which demand declines as the level of income or real GDP in the economy increases. This occurs when a good has more costly substitutes that see an increase in demand as the society’s economy improves. An inferior good is the opposite of a normal good, which experiences an increase in demand along with increases in the income level. Thus, it has an income elasticity of demand coefficient that is negative. Inferior goods can be viewed as anything a consumer would demand less of if they had a higher level of real income.
Cross Price Elasticity of Demand
Cross price elasticity of demand is an economic concept that measures the responsiveness in the quantity demanded of one good when the price for another good changes. Also called cross elasticity of demand, this measurement is calculated by taking the percentage change in the quantity demanded of one good and dividing it by the percentage change in price of the other good.
Cross Price Elasticity of Demand - Equation
[ % change in quantity demanded of good A ] / [ % change in price of good B ] = Cross Price Elasticity of Demand