Periodic yield and Quantity theory of money: Difference between pages

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''Economics''. 
A rate of return - or cost of borrowing - expressed as the proportion by which the amount at the end of the period exceeds the amount at the start.  
A theory formalised by Irving Fisher, which links the level of prices with the amount of money in circulation.  


It is defined as: P = MV/T, where P = price level, M = amount of money in circulation, V = velocity of circulation and T = volume of transactions.


==Example 1==
Monetarists believe that it is the amount of money in circulation which has the biggest effect on price levels and inflation rates.
GBP 1 million is borrowed or invested.  


GBP 1.03 million is repayable at the end of the period.
== See also ==
* [[Fisher's equation]]


The periodic yield (r) is:
r = (End amount / start amount) - 1
= (1.03 / 1) - 1
= 0.03
= '''3%'''
==Example 2==
GBP  0.97 million is borrowed or invested.
GBP 1.00 million is repayable at the end of the period.
The periodic yield (r) is:
(End amount / start amount) - 1
= (1.00 / 0.97) - 1
= 0.030928
= '''3.0928%'''
==Example 3==
GBP  0.97 million is invested.
The periodic yield is 3.0928%.
Calculate the amount repayable at the end of the period.
===Solution===
The periodic yield (r) is defined as:
r = (End amount / start amount) - 1
Rearranging this relationship:
End amount = Start amount x (1 + r)
Substituting the given information into this relationship:
End amount = GBP 0.97m x (1 + 0.030928)
= '''GBP 1.00m'''
==Example 4==
An investment will pay out a single amount of GBP 1.00m at its final maturity after one period.
The periodic yield is 3.0928%.
Calculate the amount invested at the start of the period.
===Solution===
As before, the periodic yield (r) is defined as:
r = (End amount / start amount) - 1
Rearranging this relationship:
Start amount = End amount / (1 + r)
Substitute the given data into this relationship:
Start amount = GBP 1.00m / (1 + 0.030928)
= '''GBP 0.97m'''
Check:
0.97 x 1.030928
= 1.00, as expected.
==See also==
*[[Effective annual rate]]
*[[Discount rate]]
*[[Nominal annual rate]]
*[[Periodic discount rate]]
*[[Yield]]

Revision as of 14:20, 23 October 2012

Economics. A theory formalised by Irving Fisher, which links the level of prices with the amount of money in circulation.

It is defined as: P = MV/T, where P = price level, M = amount of money in circulation, V = velocity of circulation and T = volume of transactions.

Monetarists believe that it is the amount of money in circulation which has the biggest effect on price levels and inflation rates.

See also