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| This can also be done using this [http://www.stat.ubc.ca/~rollin/stats/ssize/n1.html on-line calculator] which use a slightly more liberal criterion (normal quantiles as opposed to t quantiles) for sample size evaluation than the above spreadsheet. | This can also be done using this [http://www.stat.ubc.ca/~rollin/stats/ssize/n1.html on-line calculator.] Both these programs use the more liberal normal quantiles as opposed to t quantiles for sample size evaluation. |
Sample size for a one sample t-test
This [attachment:onesamp.xls spreadsheet] computes the total sample size for a one sample t-test with given power.
This can also be done using this [http://www.stat.ubc.ca/~rollin/stats/ssize/n1.html on-line calculator.] Both these programs use the more liberal normal quantiles as opposed to t quantiles for sample size evaluation.