yogurt | R Documentation |
Data from Jain et al. (1994) containing 2,412 choice observations from a series of yogurt purchases by a panel of 100 households in Springfield, Missouri, over a roughly two-year period. The data were collected by optical scanners and contain information about the price, brand, and a "feature" variable, which identifies whether a newspaper advertisement was shown to the customer. There are four brands of yogurt: Yoplait, Dannon, Weight Watchers, and Hiland, with market shares of 34%, 40%, 23% and 3%, respectively.
data(yogurt)
Variable | Description |
id | individual identifiers |
obsID | identifier for unique choice observation |
alt | alternative in each choice observation |
choice | dummy code for choice (1 or 0) |
price | price of yogurt |
feat | dummy for whether a newspaper advertisement was shown to the customer (1 or 0 ) |
brand | yogurt brand: "yoplait" , "dannon" , "hiland" , or "weight" (for weight watcher) |
Raw data downloaded from the package mlogit v0.3-0 by Yves Croissant archive
Dipak C. Jain, Naufel J. Vilcassim & Pradeep K. Chintagunta (1994) A Random-Coefficients Logit Brand-Choice Model Applied to Panel Data, Journal of Business & Economic Statistics, 12:3, 317-328, \Sexpr[results=rd]{tools:::Rd_expr_doi("10.1080/07350015.1994.10524547")}
data(yogurt)
head(yogurt)
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