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st: Stat advice for McNemar's test
Hi,
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?
Thanks,
Walt
--
________________________
Walter R. Paczkowski, Ph.D.
Data Analytics Corp.
44 Hamilton Lane
Plainsboro, NJ 08536
________________________
(V) 609-936-8999
(F) 609-936-3733
[email protected]
www.dataanalyticscorp.com
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