Today in Prob/Stat students worked in groups of 3-4 to create a distribution for the ages of pennies. One group even organized their pennies in a dotplot of pennies.
Once we combined all the data we
had the following dotplot at the front
of the room. (The right tail
First we created the histogram by hand and then we used our TI-84's to make the histogram. Students set the window manually to match the original histogram we made by hand. Then, we used the Zoom Stat feature. This allowed the calculator to determine the bar width. But what was the bar width? 6.875 years? Since penny ages were recorded in years, on a quick glance the histogram at the left makes more sense than the histogram at the right. Next up? Measures of center and spread and boxplots.