In the example of brand-switching data provided in the textbook (Pooch Plus dog treats), cross-sectional study analysis provided a totally different conclusion than did the longitudinal data analysis.

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Cross-sectional study analysis suggested that price was the main factor in brand switching, while longitudinal data analysis showed that brand loyalty was actually the primary driver of purchase behavior. Therefore, the two analyses provided different conclusions.

In the Example of Brand-Switching Data Provided in the Textbook