Abstract
Assortment is one of the most important tools for retailers differentiating themselves from competitors, attracting customers into the store and increasing their sales. This paper analyzes the relationship between assortment size—in terms of number of Stock Keeping Units—and category sales level, differentiating between National brands (NBs) and Private Labels (PLs). In order to do this, a panel database containing information about weekly assortment size and volume sales between 2009 and 2014 for all supermarkets operating in Spain is used. Our results confirm a positive and significant relationship between both aspects; nevertheless, the intensity of such result depends on the type of brand (NB vs. PL) but also on the frequency and penetration of the category under study.
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Notes
- 1.
More details about the estimation process are available from the corresponding author upon request.
- 2.
Except for fresh bread (NBs), as there were no autocorrelation problems for such a category. Optimal estimation of the model does not include Wald-test but R-squared as reported in Table 1.
- 3.
×10,000.
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The authors wish to acknowledge the financial support provided by the Fundación Ramón Areces (Spain)
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Gázquez-Abad, J.C., Martínez-López, F.J. (2015). The Relationship Between Assortment Size and Category Sales: A Panel Data Analysis on National Brands and Private Labels. In: Martínez-López, F., Gázquez-Abad, J., Sethuraman, R. (eds) Advances in National Brand and Private Label Marketing. Springer Proceedings in Business and Economics. Springer, Cham. https://doi.org/10.1007/978-3-319-20182-5_8
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DOI: https://doi.org/10.1007/978-3-319-20182-5_8
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