What Is the Difference Between STDEV and STDEV.S Functions in Excel?

Learn the key differences between Excel's STDEV and STDEV.S functions for calculating standard deviation accurately.

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In Excel, STDEV and STDEV.S both calculate the standard deviation for a dataset. The key difference is that STDEV.S is used for a sample of the population, while the older STDEV function can be used interchangeably but is less precise in naming. To maintain clarity and accuracy, it's recommended to use STDEV.S. For the entire population's standard deviation, use STDEV.P.

FAQs & Answers

  1. What is the difference between STDEV and STDEV.S in Excel? STDEV.S is designed to calculate the standard deviation for a sample subset of data, whereas STDEV is an older function that performs similarly but is less clearly named. STDEV.S is recommended for sample data.
  2. When should I use STDEV.P instead of STDEV.S in Excel? Use STDEV.P when calculating the standard deviation for an entire population dataset, and use STDEV.S when your data represents only a sample of the population.
  3. Is STDEV function still supported in the latest versions of Excel? Yes, the STDEV function is still supported for backward compatibility, but Microsoft recommends using STDEV.S for clearer and more accurate calculations related to sample data.

Watch More

For more insights on Excel functions, explore our related videos covering Excel's statistical tools such as STDEV.P for population standard deviation and advanced data analysis techniques.

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