Common Core State Standard: 7.SP.6 

Grade  7 
Subject  MATH 
Domain  Statistics & Probability 
Theme  Investigate chance processes and develop, use, and evaluate probability models 
Standard  Approximate the probability of a chance event by collecting data on the chance process that produces it and observing its longrun relative frequency, and predict the approximate relative frequency given the probability. For example, when rolling a number cube 600 times, predict that a 3 or 6 would be rolled roughly 200 times, but probably not exactly 200 times. 
Reference URL  http://www.corestandards.org/Math/Content/7/SP 