Show your method of determining the answer. Back up your answer with facts. The chance for each number is now even. Varying answers for the rest of the question. There are approximately 16 billion people.
Students recap what numbers came up most often, and why.
Review again the differences in bar graphs and have students generate theories of why the difference exists. Look at bar graph for believable answers. On worksheet, look for specific answers for those that have them. For all questions, did they support their answers. Let's investigate Olympic times for the 100 meter dash to answer these questions.