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Uses of Range
a.Range is suitable measure of dispersion when the data are too scattered to justify the computation of a more precise measure of dispersion.
b.In recent years range has got a special application in the quality control techniques. There are two reason for this .
1.It is easy to calculate and simple to understand.
2.Range is rather good basis for estimating the standard deviation if the sample is small and the population is through to be nearly normal.
c. It is very useful measure to study fluctuation of data. For example variation in weather forecasts movements in the prices of shares etc.
Steps of Research Proposal Proposal Content The researcher is always given instructions for preparing a proposal that indicate the format to be followed. Funding agencie
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Maximize w = 5x -2y +3z subject to 2x +2y -z>=2 y + 3z
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A paper mill produces two grades of paper viz., X and Y. Because of raw material restrictions, it cannot produce more than 400 tons of grade X paper and 300 tons of grade Y paper i
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