Stats M and M .pdf

# Being good statisticians you know that in order to

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Random m & m s {Adapted from “Statistics in Action” by Watkins, Scheaffer, Cobb} DO NOT TURN THIS SHEET OVER UNTIL YOU ARE TOLD TO DO SO! Goal : Estimate the average number of m&m’s per pile for the 100 piles pictured on the back. 1) When I give you the signal, you will have 10 seconds to look at the back side of this sheet and make a guess as to the average number of m&m’s per pile. Do not use a pencil or paper...just guess. Guess:__________ Enter this guess on the appropriate dotplot on the board. 2) Select 5 piles that are, in your judgment, representative of the entire population. Calculate the average pile size and enter the result on the dotplot on the board. Representative Average Number:_____________ Enter on the appropriate dotplot. Compare the two distributions... 3) Use a random number table or your calculator to select a SRS of 5 distinct piles.
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