SOCR EduMaterials Activities ChuckALuckExperiment

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Chuck A Luck Experiment


The game of Chuck-A-Luck begins when a gambler chooses an integer from the interval 1 to 6. Three fair dice are then rolled. If exactly k dice show the gambler’s number, the payoff is k:1.

In the first picture box, the three dice are shown on each update. Random variable W gives the gambler’s net profit on a $1 bet and it is recorded in the first table after each run.

In the second picture box, the density and moments of W are shown in blue, and are recorded in the second table. Also, the empirical density of W is shown in red in the second picture box and it is recorded in the second table.


The purpose of this experiment is to provide a useful simulation similar to the unequal game of chance, Chuck-A-Luck. After running the experiment many times, the user should realize that even if the dice are fair, the players are more likely to lose more than they win.


Go to the SOCR Experiment [[1]] and select the Chuck A Luck Experiment from the drop-down list of experiments on the top left. The image below shows the initial view of this experiment:

SOCR Activities ChuckALuckExperiment Chui 0501107 Fig1.jpg

When pressing the play button, one trial will be executed and recorded in the distribution table below. The fast forward button symbolizes the nth number of trials to be executed each time. The stop button ceases any activity and is helpful when the experimenter chooses “continuous,” indicating an infinite number of events. The fourth button will reset the entire experiment, deleting all previous information and data collected. The “update” scroll indicates nth number of trials (1, 10, 100, or 1000) performed when selecting the fast forward button and the “stop” scroll indicates the maximum number of trials in the experiment.

Selecting an integer as the player’s bet does not change the shapes of the graphs. After many trials, the empirical density of W will always be approximate to the graphs of density and moments of W. The image below displays this statement:

SOCR Activities ChuckALuckExperiment Chui 0501107 Fig2.jpg

The player should take note that whichever integer has been chosen, the mean value of data is most always negative, proving that the chances for the player to win is very unlikely.


The Chuck A Luck Experiment provides a simply java applet that allows the user to play an unequal game of chance. It could be used to verify the player’s winning expectations, but in the end, the casino has a much greater advantage than the player. The experiment could also be used for the game of Big Six Wheel as it is based on the game of Chuck-A-Luck.

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[ Materials_Activities_ChuckALuckExperiment (default)]
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