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5.3 Range

In any statistical series, the difference between the largest and the smallest values is called as the range.

Thus Range (R) = L - S

Coefficient of Range : The relative measure of the range. It is used in the comparative study of the dispersion co-efficient of Range =

Example ( Individual series ) Find the range and the co-efficient of the range of the following items :

110, 117, 129, 197, 190, 100, 100, 178, 255, 790.

Solution: R = L - S = 790 - 100 = 690

Co-efficient of Range =


Example (Continuous series ) Find the range and its co-efficient from the following data.


Solution: R = L - S = 100 - 10 = 90

Co-efficient of range =

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Index

5.1 Introduction
5.2 Methods of computing dispersion
5.3 Range
5.4 Mean Deviation
5.5 Variance
5.6 Coefficient of Variation
5.7 Percentile
5.8 Quartiles and interquartile range
5.9 Skewness moments and Kurtosis
5.10 Kurtosis

Chapter 6





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