CFA L1 Economics Flashcards
What variables influence the quantity of demand?
- Price
- Incomes in the economy
- Prices of substitues and complements
EC PREREQ1 Topics in demand and supply analysis
At what point would a business maximising revenue stop increasing prices?
- When there is unit elasticity
- ie elasticity = 1
- ie when a 1% increase in price results in a 1% decrease in demand (no net change in revenue)
EC PREREQ1 Topics in demand and supply analysis
What goods have more price elasticity?
- When close substitutes are available
- When it constitutes a large % of the household budget
- When looking at long term demand (more sensitive to price over the long run)
- When the goods are optional or discretionary
EC PREREQ1 Topics in demand and supply analysis
What goods are less price elastic?
- Those for which there are no close substitutes available
- Goods which constitute a small % of the household budget
- Goods for which there is only short term demand (i.e., travel)
- Goods which are a necessity or non-discretionary
EC PREREQ1 Topics in demand and supply analysis
Where on the demand curve is price unit elastic?
In the middle.
- Top left is elastic
- Bottom right is inelastic
EC PREREQ1 Topics in demand and supply analysis
What is income elasticity of demand?
- The amount demand for a given good changes when income in the economy increases
EC PREREQ1 Topics in demand and supply analysis
What is a normal good?
A good for which demand increases when income increases
- Income elasticity of demand is greater than 0
EC PREREQ1 Topics in demand and supply analysis
What is an inferior good?
A good for which demand DECREASES when income increases
- Income elasticity of demand is less than 9
EC PREREQ1 Topics in demand and supply analysis
What is the substitution effect?
- As price goes down, quantity goes up as demand gets substituted over
- Tends to always be positive
EC PREREQ1 Topics in demand and supply analysis
Is the income effect positive or negative?
- It depends on the type of good
- If it is a normal good, the income effect is positive
- If it is an inferior good, the income effect is negative
EC PREREQ1 Topics in demand and supply analysis
How do substitution and income effect impact quantity demanded of normal goods versus inferior goods?
- For normal goods they reinforce each other
- For inferior goods they offset each other (and quantity demanded increasing is not as much)
EC PREREQ1 Topics in demand and supply analysis
What is a Giffen good?
- An inferior good for which the negative income effect (due to substituting away) outweights the positive substitution effect when price decreases
- i.e., as the real price drops the quantity demanded drops
EC PREREQ1 Topics in demand and supply analysis
What is a Veblen good?
As the nominal price rises, quantity demanded rises
EC PREREQ1 Topics in demand and supply analysis
What are increasing marginal returns?
The productivity of each additional unit of a resource (L,K) increases as each additional unit of that input are employed
- An example might be adding labour, through specialisation and division of labour ie Adam Smith’s production line
EC PREREQ1 Topics in demand and supply analysis
What are diminishing marginal returns?
- After a certain output, the output to labour ratio begins to decrease
- One example is if K (capital) is being used at 100% capacity. In this case, labour will not increase output
EC PREREQ1 Topics in demand and supply analysis
What are the benefits of increased productivity?
- lower total costs (which translates into higher productivity measures)
- if increased productivity is passed onto the worker, then increase in worker rewards, which motivates further productivity increases from labour
- Increase in market value of a company’s equity
EC PREREQ1 Topics in demand and supply analysis
What is economic profit?
Total revenue - economic costs
Where economic costs are accounting costs + an equity charge + the opportunity cost
EC PREREQ1 Topics in demand and supply analysis
Under perfect or imperfect competition what does the demand curve look like?
- Under perfect competition all firms are small and none have influence over the price (cannot produce enough to do so)
- They are all price takers
- Therefore it is a horizontal line
- Under imperfect competition there is a downward sloping curve, because if we lower our price we will get a different quantity
EC PREREQ1 Topics in demand and supply analysis
What is shutdown point?
Variable costs equal revenue (so not enough to cover fixed cost)
EC PREREQ1 Topics in demand and supply analysis
How can you justify increases in wages using the marginal cost formula?
If wages increase then ceteris paribus marginal cost just increases
- If wages increase but the marginal product of labour increases to offset it then marginal cost does not change
- As such increases in wages can be justified where an increase in marginal product of labour equally accompanies it, as the economics of the business for the owners do not change
EC PREREQ1 Topics in demand and supply analysis
What does it mean that under perfect competition no firms will make a profit?
The profit here is economic profit
- Therefore it includes opportunity cost
- It is not saying that the firms will make no money
- Rather, it is that firms will only make back their cost of capital
- There are no ABNORMAL profits
EC PREREQ1 Topics in demand and supply analysis
What determines optimal output?
The intersection of marginal revenue and marginal cost
EC PREREQ1 Topics in demand and supply analysis
What determines optimal price?
The demand curve, which is extended above marginal revenue on the graph
EC PREREQ1 Topics in demand and supply analysis
How do you find average total cost from a cost per unit graph?
- Find quantity on the X
- Go upwards to see the Y value of average fixed cost
- See the difference between average variable cost and average variable cost at that X value
- Add the two together
EC PREREQ1 Topics in demand and supply analysis