M&M Chi-Square Activity



M&M Chi-Squared Activity

What type of M&Ms do you have? _____________________

In your bag, count the number of each color of M&M and record them in the “observed” row below.

|Color |Brown |Yellow |Red |Blue |Orange |Green |Total |

|Observed | | | | | | | |

|Expected | | | | | | | |

These are the distributions (percentages) for the various types of M&Ms:

|Type |Brown |Yellow |Red |Blue |Orange |Green |

|Plain |13 |14 |13 |24 |20 |16 |

|Peanut |12 |15 |12 |23 |23 |15 |

Use the company’s distribution of your type of M&Ms to fill in the “expected” row above, using the total number of M&Ms in your bag. Does the evidence suggest that the distribution of colors in your bag match the company’s distribution?

Now, fill your data into the appropriate row in the following table, and fill in the other row with data from a group that has a different type of M&M.

|Type |Brown |Yellow |Red |Blue |Orange |Green |

|Peanut | | | | | | |

|Plain | | | | | | |

Does the evidence suggest that the distribution of colors in your type of M&Ms match the distribution of colors in the other type of M&M’s?

Finally, use the table above with your data and another group’s data. Does the evidence suggest that the distribution of colors is dependent on the type of M&Ms?

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What type of (2 test is this?

What type of (2 test is this?

What type of (2 test is this?

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