Unformatted text preview: ain. Many government
publications are relatively cheap and libraries stock
quantities of secondary data produced by the government,
by companies and other organisations.
2. Large quantities of secondary data can be got through
3. Much of the secondary data available has been collected for
many years and therefore it can be used to plot trends.
4. Secondary data is of value to:
- The government – help in making decisions and
planning future policy.
- Business and industry – in areas such as marketing,
and sales in order to appreciate the general economic
and social conditions and to provide information on
- Research organisations – by providing social,
economical and industrial information.
37 3.4 Classification:
The collected data, also known as raw data or ungrouped
data are always in an un organised form and need to be organised
and presented in meaningful and readily comprehensible form in
order to facilitate further statistical analysis. It is, therefore,
essential for an investigator to condense a mass of data into more
and more comprehensible and assimilable form. The process of
grouping into different classes or sub classes according to some
characteristics is known as classification, tabulation is concerned
with the systematic arrangement and presentation of classified data.
Thus classification is the first step in tabulation.
For Example, letters in the post office are classified
according to their destinations viz., Delhi, Madurai, Bangalore,
Objects of Classification:
The following are main objectives of classifying the data:
1. It condenses the mass of data in an easily assimilable form.
2. It eliminates unnecessary details.
3. It facilitates comparison and highlights the significant
aspect of data.
4. It enables one to get a mental picture of the information and
helps in drawing inferences.
5. It helps in the statistical treatment of the information
Types of classification:
Statistical data are classified in respe...
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This note was uploaded on 01/18/2014 for the course BUS 100 taught by Professor Moshiri during the Winter '08 term at UC Riverside.
- Winter '08