Central Tendency and Variation Activity
1. Roll 4 dice 40 times, recording the sum for each roll.  Do it again so you have two groups of 40 numbers
2. Calculate the mean, median, mode, and midrange for both setsof data. The four numbers should be close to one another for eachdata set. Write a sentence or two accounting for anydiscrepancies.
3. Calculate a 5 number summary for both sets of data (it mayhelp to create a tally chart or stem and leaf plot for both sets ofdata. Write a sentence or two describing any differences betweenthe two sets of number and offer reasons for the discrepancy.
4. Calculate the standard deviation for both sets of data. Whichdata set is more spread out? Why is thisso?      Â
