"list the characteristics of good statistical data "
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Answers
1. It consists of aggregates of facts.
2. It is effected by many causes.
3. It should be numerically expressed.
4. It must be enumerated or estimated accurately.
5. It should be collected in a systematic manner.
6. It should be collected for a predetermined purpose.
7. It should be capable of being placed in relation to each other.
EXPLANATION
1. It consists of aggregates of facts:
In the plural sense, statistics refers to data, but data to be called statistics must consist of aggregate of certain facts.
2. It is effected by many causes:
It is not easy to study the effects of one factor only by ignoring the effects of other factors. Here we have to go for the effects of all the factors on the phenomenon separately as well as collectively, because effects of the factors can change with change of place, time or situation.
3. It should be numerically expressed:
A data to be called statistics should be numerically expressed so that counting or measurement of data can be made possible. It means that the data or the fact to constitute statistics must be capable of being expressed in some quantitative form.
4. It must be enumerated or estimated accurately:
As stated above that the statements should be precise and meaningful. For getting reasonable standard of accuracy the field of enquiry should not be very large.
5. It should be collected in a systematic manner:
Another characteristic of statistics is that the data should be collected in a systematic manner. The data collected in a haphazard manner will lead to difficulties in the process of analysis, and wrong conclusions.
6. It should be collected for a predetermined purpose:
Before we start the collection of data, we must be clear with the purpose for which we are collecting the data. If we have no information about its purpose, we may not be collecting data according to the needs.
7. It should be capable of being placed in relation to each other:
It is last but not less important of the characteristics of the statistics. The collection of data is generally done with the motive to compare. If the figures collected are not comparable, in that case, they lose a large part of their significance.
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