Consequently the chance of making a Type I error alpha error increases substantially or is inflated because so many computations are being performed. Thus data generated from a clinical trial that involves four experimental groups Treatment 1 Treatment 2 Treatments 1 and 2 combined and a Control would require 6 t-tests. Rejoining letter after maternity leave sampleĪnalysis of variance ANOVA is a statistical procedure that compares data between two or more groups or conditions to investigate the presence of differences between those groups on some continuous dependent variable see Exercise Remember that a t-test is formulated to compare two sets of data or two groups at one time see Exercise 23 for guidance on selecting appropriate statistics. Truck trailer wiring diagrams diagram base website wiringīluetooth headphones not working on modern warfare
