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What is Product Estimation in Survey Sampling about?

Product estimation is a survey sampling technique used when there is strong negative correlation between the study variable Y and the auxiliary variable X. It adjusts the sample mean using a factor involving the population mean of X, making it useful when the auxiliary variable is known for all population units. While it offers advantages like reduced variance and efficient use of auxiliary information, it also has limitations such as bias and poor performance with positive correlations.

Author

grandsonella

Language

EN