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The velocity of money provides another perspective on money demand.Given the nominal flow of transactions using money, if the interest rate on alternative financial assets is high, people will not want to hold much money relative to the quantity of their transactions—they try to exchange it fast for goods or other financial assets, and money is said to "burn a hole in their pocket" and ...
The quantity theory of money consequently goes further, resting in its basic form on three additional assumptions: [36] The amount of real output is exogenous, being determined by other forces such as available production factors and production technology; Velocity is constant over time
In monetary economics, the equation of exchange is the relation: = where, for a given period, is the total money supply in circulation on average in an economy. is the velocity of money, that is the average frequency with which a unit of money is spent.
Money velocity had been stable and grew consistently until around 1980 (green). After 1980 (blue), money velocity became erratic and the monetarist assumption of stable money velocity was called into question. [94] Monetarism attracted the attention of policy makers in the late-1970s and 1980s.
For example, the velocity of money is defined as nominal GDP / nominal money supply; it has units of (dollars / year) / dollars = 1/year. In discrete time , the change in a stock variable from one point in time to another point in time one time unit later (the first difference of the stock) is equal to the corresponding flow variable per unit ...
In the same work, Copernicus also formulated an early version of the quantity theory of money, [2] or the relation between a stock of money, its velocity, its price level, and the output of an economy. Like many later classical economists of the 18th and 19th centuries, he focused on the connection between increased money supply and inflation. [6]
In the 1970s velocity had seemed to increase at a fairly constant rate, but in the 1980s and 1990s velocity became highly unstable, experiencing unpredictable periods of increases and declines. Consequently, the stable correlation between the money supply and nominal GDP broke down, and the usefulness of the monetarist approach came into question.
If money demand is stable then velocity is constant and =. Additionally, in the long run real output grows at a constant rate equal to the sum of the rates of growth of population, technological know-how, and technology in place, and as such is exogenous. In this case the above equation can be solved for the inflation rate: