This paper gives alternative derivations for the standard variance formulas in two-stage sampling. The derivations are based on a direct use of the statistical properties of the sampling errors in the ...
Melissa Horton is a financial literacy professional. She has 10+ years of experience in the financial services and planning industry. Robert Kelly is managing director of XTS Energy LLC, and has more ...
Mary Hall is a editor for Investopedia's Advisor Insights, in addition to being the editor of several books and doctoral papers. Mary received her bachelor's in English from Kent State University with ...
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Random Sampling: Key to Reducing Bias and Increasing Accuracy
Random sampling is a random means of gathering data points from all groups. It eliminates bias within your data sets by using ...
Mathematical Proceedings of the Royal Irish Academy, Vol. 99A, No. 2 (Dec., 1999), pp. 171-177 (7 pages) In this paper we derive the exact covariance of some sample moments for 'simple random sampling ...
Whether you are generating lottery numbers or sample data for a survey, random numbers are easy to create in Excel. While true randomness is difficult to simulate with software, Excelâ s random ...
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