Learning goals: Teacher Facing Calculate the mean or median of various samples, and compare them with the mean or median of the population. Comprehend that the term “representative” (in spoken and written language) refers to a sample with a distribution that closely resembles the population’s shape, center, and spread. Given dot plots, determine whether a sample is representative of the population, and explain (orally and in writing) the reasoning. Full lesson plan (warm-up, activities, synthesis, cool-down prompt) from 7.8 Probability and Sampling, Grade 7.