Which one of the following four statements is incorrect in estimation? 1. The sample mean is an unbiased estimator of the population mean. 2. The sample variance is an unbiased estimator of the population variance. 3. The population mean is an unbiased estimator of the sample mean. 4. The sample variance multiplied by (n – 1)/n, where “n” denotes a finite sample size, is a biased estimator of the population variance.

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Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.