
1. Determinants of the price elasticity of demand
• | The availability of close substitutes |
• | Whether the good is a necessity or a luxury |
• | How broadly you define the market |
• | The time horizon being considered |


1) Price elasticity of demand is inelastic or less than 1 if the changes in quantity demanded are less than the changes in price.
It is elastic if the changes in quantity demand are more than changes in price.
A good without any close substitutes is likely to have relatively inelastic demand since consumers cannot easily switch to a substitute good if the price of the good rises. So the change in quantity demanded would be less when the price increases with a higher proportion.
Given the two goods, a diamond necklace would have a more elastic demand. This is because it is a luxury good as compared to amputation procedure which is a necessity and not a luxury good.
So diamond necklace has the most elastic demand.
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