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st: Stat advice for McNemar's test

From   "Data Analytics Corp." <>
To   Stata Listserve <>
Subject   st: Stat advice for McNemar's test
Date   Tue, 21 Oct 2008 09:06:28 -0400


I have a client who did a basic before-after taste test for two products. For each, the consumers were asked if the like the product on an initial taste and then again after a period of time. Each consumer tested each product. For one product, a McNemar's Test can be used to see if the marginals are the same - to see if there's a difference in liking from the initial to later taste. But what about both products? The client wants to know about interactions between the products and time? Any advice?




Walter R. Paczkowski, Ph.D.
Data Analytics Corp.
44 Hamilton Lane
Plainsboro, NJ 08536
(V) 609-936-8999
(F) 609-936-3733

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