Prog 2

This document, from the DECUS Program Library (No. L-91), provides a write-up for a program titled 'PROG 2', authored by Paul Shrager and submitted by John R. Urbach in January 1970. The program is designed to calculate Student's 't' statistic to determine the significance of differences between the number of heartbeat intervals of a specific duration across two distinct groups. The documentation includes the mathematical formula used for the calculation, the definitions of variables such as interval totals and durations, and instructions for loading and running the program using a BIN loader starting at address 200.