This is a graphic organizer that explains each step in finding the estimated variance and standard deviation for when you are working from a frequency table (a grouped dataset with up to 12 groups) rather than the actual original data. This organizer is useful for students new to the topic, struggling learners, and also any learners who need very concrete instructions for solving these types of problems. Highly recommended for differentiating in mainstream classrooms and for pull-out mathematics classes. During the corresponding lessons, I make these available to all my students. Graphic organizers are also useful for students who have missed lessons and who need to be able to, as independently as possible, catch up to the rest of the class.