## Sample size for 3 treatments [Software]

Dear libaiyi,

additional to what Helmut has recommended:
Calling sampleN.TOST() with argument design="3x6x3" is appropriate if you aim for analyzing the data according to the "all at once" strategy.

If you analyze according to the "two at a time" strategy use design="2x2", the default for that argument.

Regards,

Detlew