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May 3rd, 2010, 10:21 PM   #1
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Help with Chi Square Test

Could you please solve this for me showing all steps. I just can't seem to get the right answer:

The Following table shows site type and type of pottery for a random sample of 628 sherds of at a location in Sand Canyon Archaeological Project, Colorado:

Pottery Type
-----------------------------------------------------------------------------------------------------------------------------
Mesa Verde McElmo Mancos Row
Site type B on W B on W B on W Total

Mesa Top 75 61 53 189
Cliff-Talus 81 70 62 213
Canyon Beach 92 68 66 226
Column Total 248 199 181 628



Use the chi-square test to determine if site type and pottery type are independent at the 0.01 level of significance.

Thank you,

Larry
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May 4th, 2010, 07:15 AM   #2
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Can you post your work, so that your mistake(s) can be identified? To revise what you need to do, read this description.
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October 26th, 2017, 01:41 PM   #3
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There is an easy way to do this problem, just copy/paste the summary table (removing the headers, removing row sum, column sum and total like below)

75 61 53
81 70 62
92 68 66

into this free online chi-square test calculator, and you will get a p value of 0.967907596203. As the p value is way bigger than 0.01, we can reject independence at 0.01 level.

Last edited by James White; October 26th, 2017 at 01:47 PM.
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October 26th, 2017, 04:45 PM   #4
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Sorry I meant to say "As the p value is way bigger than 0.01, we can NOT reject independence at 0.01 level."
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