Agricultural Statistics

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                             Agricultural Statistics

1. STA - Practical Manual on Statistics
2. STCA 101 - STATISTICS
3. STA 211 - Agricultural Statistics (1+1)

Introduction - Statistics

Statistics is the science which deals with the 1. Collection of data. 2. Organization of data (or) classification of data. 3. Presentation of data. 4. Analysis of data. 5.Interpretation of data which are known as the Statistical Methods.

Function of Statistics

Statistics simplifies complexity, presents facts in a definite form, helps in formulation of suitable policies, facilitates comparison, and helps in forecasting.

Importance of Statistics

The importance of Statistics would be clear from the following points. Statistics is useful in the administration of various States i.e. It is useful to the Government in forming policies, businessmen, Economists, research workers, in planning, to the bankers, insurance companies etc., supervision, and the development of other sciences.

Limitations of Statistics

Statistics does not study individuals, study qualitative phenomena, results are only approximately correct, clears with averages and is liable to be misused.

Data

The information collected through censuses and surveys (or) in a routine manner (or) other sources is called a raw data.

There are two types of statistical data. 1. Primary data. 2. Secondary data.

Primary data

Primary data are those data which are collected for the first time. They are original in character. They are in the shape of raw materials.

 Collection of Primary data

Primary data may be collected by applying any one of the following methods.


  • Direct Personal Interview
  • Indirect Oral Investigation
  • Schedules and Questionnaires.

( There are two ways of applying this method) i) Mailed Questionnaire ii) Questionnaire sent through enumerators.
Local Reports.

Secondary data

Secondary data are those data which are already collected by some person and which passed through statistical machinery at least once. They are secondary in character. They are in the shape of finished products. Secondary data may be either published (or) unpublished.

Reference

TNAU - Tamilnadu Agriculture University, Coimbatore Materials And TNAU - Affiliated Private College Materials, TNAU Government College Materials, ICAR - Indian Council Of Agriculture Research, New Delhi Materials to Collected.


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