Dr. Diecks has designed a study to determine which anti-bullying program is more effective. Group 1 is composed of three schools are provided with a training where individuals who were bullied come in and talk about their experiences. Group 2 includes three schools are provided with a training to teach how to be kind and to reach out to students who seem alone. Group 3 includes three schools are provided with a training on how to confront people who are bullying others. At the end of the training, Dr. Diecks creates a survey to find out which students are more equipped to help prevent bullying in their schools. The survey has 20 questions that are then added together to create an anti-bullying score. Dr. Diecks wants to compare the three different groups on this measure to determine which type of training is the best. What type of statistical analysis would Dr. Diecks need to use? independent measures t-test descriptive statistics correlation single factor analysis of variance