Benchmark 12B
Habits of Mind: Computation and Estimation
Grades 6-8, page 291

Estimate probabilities of outcomes in familiar situations, on the basis of history or the number of possible outcomes.
 

NSES Content Standard A 
Science as Inquiry: Abilities necessary to do scientific inquiry
Grades 5-8, page 148
Use mathematics in all aspects of scientific inquiry. Mathematics is essential to asking and answering questions about the natural world. Mathematics can be used to ask questions, to gather, organize and present data, and to structure convincing explanations.