LIMITATIONS OF STATISTICS
Despite its power, essential use fullness and universal applicability statistics has its own limitation and imperfections, which are as under;
1. Statistics does not study individual:
Individuals facts and figures are of importance to individuals only statistics does not deals with them .It deals with mass phenomena and therefore, throws light on the whole of a given group. Statistical deals with aggregates, though for purpose of analysis these aggregates are very often reduced to single figures like average, percentages.
2. Statistics does not study qualitative phenomena:
The statically methods can be applied to the study of those problems only that are capable of quantitative expression, i.e., it is not applicable to the study of those facts that are not quantitatively measurable, for example attributes like honesty, healthy skills etc be measured weight in figures.
3. Statistics data do not reveal the story:
Statistical data collected relating the problem under study do not reveal the entire story of the problems. This is because many problems are affected by factors which are in capable of statistical analysis. Therefore it. Is not always possible to examine a problems I all its manifestations only by the statically of a country’s culture, philosophy or religion. “It is certainly important I statistical investigation not to forget that the data do not tell everything, and in their summarized, reduced form, they leave out a lot of information that may be importance “. Tippet.
4. Statistical results are not always
unquestionable:
Statistical results are more in the nature of estimate and probabilities than exact statement. The statistical methods are one of the several methods of studying problems. It helps us in studying trends, in forming an idea of the probabilities, in knowing how a given phenomenon has been behaving generally necessarily unquestionable and reliable.
5. Statistical laws are true on the average or in the long run:
That is, they are not true in their entirety-they are statements of long-term tendencies, and, therefore, cannot be considered stables. Statistical laws of physical science are. This is because statistics deals with phenomena which are affected by a multiplicity of causes. And it is not possible to study statically the effects of each of those causes to factors separately, as it is possible under the experimental methods. Because of this limitation, conclusion arrived at are not perfectly accurate and consequently the same conclusions cannot be arrived at under similar condition at all times.
6. Statically result might leads to fallacious conclusions if they are quote without their context or If they are manipulated:
Statistical results are true only in a particular context, if the context is absent, we cannot be sure of their validity. E.g. if the average profits earned by two firms are over the past few years are quoted, and incidentally, m the averages happens to be identical quantities, the conclusions may be drawn that both the firms are doing equally well. But if the actual profits earned by each of the two firms during the period were examined, it may be found that the profits of one firms is going up year by year while those of the other are going down by down.
7. Statistical data are liable to be misused easily:
Any person can use statistics and draw any type of conclusion he likes they may be used by anyone to make a worse case appears to be a better case. Like medicines in the hands of quacks, statistics can be easily misused by the inexpert, statistical data can be scientifically handled only by those who have expert knowledge of statistical methods.
Thank you....... Avhi Aryal
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