My Math Forum Help with Chi Square Test

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 May 3rd, 2010, 09:21 PM #1 Newbie   Joined: Aug 2009 Posts: 3 Thanks: 0 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
 May 4th, 2010, 06:15 AM #2 Global Moderator   Joined: Dec 2006 Posts: 20,622 Thanks: 2076 Can you post your work, so that your mistake(s) can be identified? To revise what you need to do, read this description.
 October 26th, 2017, 12:41 PM #3 Newbie   Joined: Oct 2017 From: US Posts: 13 Thanks: 1 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 12:47 PM.
 October 26th, 2017, 03:45 PM #4 Newbie   Joined: Oct 2017 From: US Posts: 13 Thanks: 1 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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