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Exchange rate of U.S. dollar vis-a -vis ...

Exchange rate of U.S. dollar vis-a -vis Indian rupee (i.e. 1 U.S. dollar = so many Rs) from April to Dec . 2002 is given below . Find the range and the coefficient of range.

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The correct Answer is:
Range = ₹ `0.856, V_(R) = 0.009`
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