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प्रश्न
Write short note on sampling distribution and standard error
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उत्तर
Sampling distribution:
Sampling distribution of a statistic is the frequency distribution which is formed with various values of a statistic computed from different samples of the same size drawn from the same population.
For instance if we draw a sample a size n from a given finite population of N, then the total number of possible samples is
Ncn = `("N"!)/("n"!("N" - "n")!)` = k(say)
Standard Error:
The standard deviation of the sampling distribution of a statistic is known as its standard error abbreviated as S.E.
The standard error (S.E) of some of the well-known statistics, for large samples, are given below, where n is the samples size, σ² is the population variance.
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