Advantages and disadvantages of a consumer panel?

TedDuda Economics Supervisor
Advantages: lower cost than primary data collection methods, rapid availability and timelineness of brand switching and shifts in buyer preferences accurate report of sensitive expenditures: beer, liquor, cigarettes high level of specificity e.g. actual products not intentions anymore information on aggregate sales activity and shifts in retail outlets (store performances Disadvantages: there are possibility of selection bias which is distortion of evidence or data that arises from the way that the data are collected. Mortality effect testing effect
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