Aggregate supply
Aggregate supply
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Aggregate supply is the total amount of goods and services produced
by an economy in a year
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Short run
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Short run is when all the factors of
production do not change
do not change so there is a positive
relationship between output and average price levels.
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Shifts in sras
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A change in anything other than price level will result in a shift in
the SRAS curve
Supply side shocks
Typical changes-
A change in the wage rates
A change in raw materials
A change in the price of imports
A change in government indirect taxes and subsidies
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Combining AD and AS in the short run
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The economy will meet at the equalibrium
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Long run aggregate supply
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New classical LRAS
Beleif in the effeciency of the market/ little gov. intervention
LRAS is vertical at Full
employment level of output which represents potential output
LRAS is based on quality and quantity independent of price level.
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Keynesian AS
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Phase 1: perfectly
elastic phase- low output levels mean industries can increase output without
incurring higher average costs due to spare capacity in the economy
Phase 2: security
phase- as the economy approaches Yf spare capacity is used up and FOP are
scarce. Producers start competing for scarce FOP so increased output means
higher costs so higher average price levels
Phase 3: Economy has
reached full capacity (yf) so output cannot be increased so competition amng
firms for FOP results in increase average price levels (inflation) output
cannot go up without a shift in the curve
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Shifts in LRAS
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Steady increase, move to the right if therwe is an improvement in
quality of the factors of production, or increase.
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Supply side policies
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Policies to increase supply
Market based and interventionist
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