Diffrence Between Inferior and Normal Good

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2. If the price of both black and white and colour televisions falls, consumers buy more of each of them. Yet if consumers’ incomes rise, they buy fewer black and white televisions and more colour televisions. Show why these differences arise between these two types of good A normal demand curve slopes downward from left to right in correspondence with laws of demand (the higher the price the lower the quantity demanded, cetris paribus). But there are situations whereby contrary is the case (i.e. the laws do not hold). The demand curve may slope upward from left to right; it may be vertical or horizontal. This is a situation described as exceptional demand curve. Firstly, to understand the two types of goods we have to look at substitution and income effect. * A substitution effect-“if the price of a good falls, the quantity demanded will usually increase. This is because of the fall in price of good A, A becomes relatively cheaper than other goods and hence there is a desire to buy more. Consumers inevitably switch to the relatively cheaper good” (Andrew Gillespie, 2009) (p.7). * An income effect-“if the price of good falls, the quantity demanded will usually increase. This is because with a lower price of good A, the consumer has more real income(income after adjusting to inflation).if he/she bought the same amount of goods as before, there would be money left over. This means the consumer has more purchasing power because good A is cheaper” (Andrew Gillespie, 2009) (p.7). Given the understanding of these two effects we will look at how these two goods can be classified and their differences. Most goods are normal goods. A normal good is one where, as one would expect, its demand rises as consumers' income rises. There is a positive relationship between real income and the demand for the good in question. Of course, this also means that the demand for
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