::Free Statistics and Forecasting Software::

v1.2.1

 

:: Minimum Sample Size - Testing Mean - Free Statistics Software (Calculator) ::

All rights reserved. The non-commercial (academic) use of this software is free of charge. The only thing that is asked in return is to cite this software when results are used in publications.

This free online software (calculator) computes the minimum sample size that is required to test a mean. The computation takes into account: a margin of error (allowable deviation), the percentage of confidence, the population size (use a large number for infinite populations), the population variance, and the power (default is 50%).
In addition, the minimum sample size is computed for the case where the population variance is unknown (the specified population variance is used as a starting value in the t-distribution).

Send output to:
Population size (?)
Margin of Error (?)
Confidence 
Population Variance 
Power (?)
Chart options
Width:
Height:



Source code of R module
Top | Output | Charts | References



Cite this software as:
Wessa P., (2018), Minimum Sample Size (Testing Mean) (v1.0.3) in Free Statistics Software (v1.2.1), Office for Research Development and Education, URL http://www.wessa.net/rwasp_samplenorm.wasp/
The R code is based on :
NIST/SEMATECH e-Handbook of Statistical Methods, http://www.itl.nist.gov/div898/handbook/, 2006-11-12.
Top | Output | Charts | References

To cite Wessa.net in publications use:
Wessa, P. (2024), Free Statistics Software, Office for Research Development and Education,
version 1.2.1, URL https://www.wessa.net/

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Software Version : 1.2.1
Algorithms & Software : Patrick Wessa, PhD
Server : supernova.wessa.net

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