Hello Melinda, thank you for your reply and for pointing me to the data. I have a question --what was the alternative hypothesis used? I'm thinking that it should be that the proportion of Correct Answers > 0.3333, because that is evidence that there is truly a difference between products A and B. The triangle test is a discriminatory test, so we care about whether panelist choose the correct answer more than would be expected by chance. [cid:image001.png@01D2D0B0.86FD89B0] When I ran the test with the one-sided alternative hypothesis, I got a slightly different probability than was in the Distribution script supplied with the sample data. Not sure if this 2-sided Chi-Square test was intended to represent a triangle test. [cid:image002.png@01D2D0B0.86FD89B0] Regards, Paul
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