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Determination of Sample Size


Affiliations
1 Department of Statistics, Modern College of Arts Science and Commerce, Shivajinagar, Pune - 5, India

One of the crucial questions in researchers mind is how big my sample should be. There are several methods of estimation of sample size. We classify them in two categories. The first one is the forecasting, estimation or prediction and the second is the testing of hypotheses or comparison. In each case the results are reliable or precise if sampling is proper and the size of sample is adequate. We give the formulae to determine the size of sample in each of the situations which will be of immense use to the researchers.

Keywords

Sample, Population, Margin of Error, Confidence Coefficient, Hypothesis, Level of Significance, Power of Test, ANOVA, Normal Distribution, Control Chart, Degrees of Freedom, Chi-Square Test, Contingency Table.
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  • Determination of Sample Size

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Authors

Prakash Dixit
Department of Statistics, Modern College of Arts Science and Commerce, Shivajinagar, Pune - 5, India

Abstract


One of the crucial questions in researchers mind is how big my sample should be. There are several methods of estimation of sample size. We classify them in two categories. The first one is the forecasting, estimation or prediction and the second is the testing of hypotheses or comparison. In each case the results are reliable or precise if sampling is proper and the size of sample is adequate. We give the formulae to determine the size of sample in each of the situations which will be of immense use to the researchers.

Keywords


Sample, Population, Margin of Error, Confidence Coefficient, Hypothesis, Level of Significance, Power of Test, ANOVA, Normal Distribution, Control Chart, Degrees of Freedom, Chi-Square Test, Contingency Table.