Determining a value for the standard deviation – 1

One of the great features of the nQuery Advisor program is its ability to assist a user in determining a value for the standard deviation. This section of nQuery Advisor eTutor shows the full extent of this very useful element of the program. It shows how to use the Data Entry Standard Deviation Calculator, how to estimate the standard deviation from any one of 10 different options, and how to specify the covariance matrix for a repeated measures design.