Frequently Asked Questions

What is Sampling Error and How it Can Be Reduced?

The population is the complete data and the sample is the subset of population data.

Sampling Error is the difference between the population value and the sample statistic value used to estimate it.

For example

  • Difference between the population means and sample mean.
  • Difference between population standard deviation and sample standard deviation.

Sampling Error Formula

Sampling Error = confidence level × [standard deviation of population / (square root of sample size)]

Sampling Error can be reduced by increasing the sample size.

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