Probability

**Probability Experiment**
//We can even collaborate on Google Docs!// Groups of students will roll two dice 20 times and record how many times they get the sums 2 through 12. Then they will record their results in the shared google docs spreadsheet. The google docs spreadsheet will automatically graph the data as it is entered. Once all groups have uploaded their results, compare the graph to the theoretical result which shows that the sum of 7 has the "theoretical" probability of being rolled most often (1/2 times). Did our experiment confirm this? (note: the data will confirm the theoretical result the more times the dice in rolled, so the more data entered, the closer the graph should look to the theoretical!)

media type="googlespreadsheet" key="p1uU37Hq8nAOhJVBhkGJ0Wg" width="500" height="300" align="right" __**Guiding Questions:**__ 1) What sum do you think most often comes up? 2) Why do you think some people think 7 is a "lucky number"? 3) Does our experiment match the "theoretical" graph results? 4) Why or Why not? 5) What could affect our outcomes?

Excel Spreadsheet version

//Let's see if our results match the theoretical results: []//

**//Pages Created by Kathleen L Post//** stampinpost@yahoo.com