This can be caused by mixing populations. The extent of dispersion increases as the divergence between the highest and the lowest values of the variable increases. Toggle Advantages and disadvantages subsection 5.1 Advantages. Leptokurtic (Kurtosis > 3) : Peak is higher and sharper than Mesokurtic, which means that data has heavy outliers. The table represented above shows that the poorest 20 per cent of the income earners receive only 5 per cent of the total income whereas the richest 20 per cent of the sample respondents shared as much as 43 per cent of it. These cookies help provide information on metrics the number of visitors, bounce rate, traffic source, etc. 1. it treats all deviations from the mean the same regardless of their direction. Consider the following series of numbers: Here, the highest value of the series is 12 and the lowest is 1. More precisely, it measures the degree of variability in the given observation on a variable from their central value (usually the mean or the median). Advantages and Disadvantages *sensitive measurement as all values are taken into account. But you can send us an email and we'll get back to you, asap. They are liable to misinterpretations, and wrong generalizations by a WebClassification of Measures of Dispersion. Thus, if we had observed an additional value of 3.5kg in the birth weights sample, the median would be the average of the 3rd and the 4th observation in the ranking, namely the average of 1.4 and 1.5, which is 1.45kg. We found the mean to be 1.5kg. Here, we are interested to study the nature and the exact degree of economic inequality persisting among these workforces. The dotted area depicted above this curve indicates the exact measure of deviation from the line of Absolute-Equality (OD) or the Egalitarian-Line (dotted Line) and hence gives us the required measure of the degree of economic inequality persisting among the weavers of Nadia, W.B. xn and A to be its arithmetic mean or the middle most value i.e., the median, then the absolute (or positive) values of the deviations of all these observations from A and their sum can be represented as: (a) On many occasions it gives fairly good results to represent the degree of variability or the extent of dispersion of the given values of a variable as it takes separately all the observations given into account.
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