One Arm Normal Program

One Arm Normal Sample Size and Power

Function

One Arm Normal is a program to calculate either estimates of sample size or power for one sample normal problem.

Program Code

The program is written in JavaScript.

Source

Rosner, B., Fundamentals of Biostatistics, Prindle, Weber and Schmidt, 1982.

The formulas are the classic one sample formulas for sample size and power for two sample normal problem with constant variance.

Input Items

The user is prompted for values to the following items. For items that have initial default values set, the values are given in parentheses.

One-sided or two-sided test

1-b, the desired power for sample size estimation, or n, the total sample size for power estimation

Back to One Arm Normal program.