Welcome to the sample size calculations page.
You have reached the Comparison of Two Means page

Aerial View of The University of Surrey Campus.

Please fill in all of the details below :

q1.	Type of test	2 sided 1 sided
q2.	Size of test	5% 1%
q3.	Underlying Standard Deviation
q4.	Difference wishing to be identified

<--- CLICK HERE FOR SAMPLE SIZE REQUIREMENTS