1. Economical:It is economical, because we have not to collect all data. Instead of getting data from 5000 farmers, we get it from 50-100 only.
2. Less Time Consuming:As no of units is only a fraction of the total universe, time consumed is also a fraction of total time. Number of units is considerably small, hence the time.
3. Reliable:If sample is taken judiciously, the results are very reliable and accurate.
4. Organisational Convenience:As samples are taken and the number of units is smaller, the better (Trained) enumerators can be employed by the organisation.
5. More Scientific:According to Prof R.A. Fisher, “The sample technique has four important advantages over census technique of data collection. They are Speed, Economy, Adaptability and Scientific approach.”
6. Detailed Enquiry:A detailed study can be undertaken in case of the units included in the sample. Size of sample can be taken according to time and money available with the investigator.
7. Indispensable Method:If universe is bigger, there remains no option but to proceed for this method. It is specially used for infinite, hypothetical and perishable universes.
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