Abstract:
We describe a methodology by which a retailer can identify
action steps that are likely to increase sales and customer satisfaction and
demonstrate the methodology using proprietary data from a large retailer with
over 500 stores. We use monthly store-level data on a number of operational
variables including in-stock rate, store staffing level as measured by payroll
and store employee turnover, together with customer responses to satisfaction
surveys. We develop a nested three-stage econometric model to analyze the
marginal effects of various execution levers on sales, customer satisfaction
and the percentage of customers who answer yes to the question Did you find
everything you were looking for?, which we term customer perceived in-stock. Our
model explains approximately 75%, 97% and 71%, respectively, of the residual
variation in sales, customer satisfaction, and customer perceived in-stock. We
find that customer perceived in-stock is primarily driven by actual in-stock
and customer rating of employee knowledge; overall customer satisfaction is primarily driven by customer perceived in-stock, payroll level, customer rating of employee
knowledge and check-out efficiency; and sales is primarily driven by actual
in-stock, overall satisfaction and payroll level. Finally, we estimate relative
magnitudes of these effects, propose specific actions to improve sales and estimate the likely sales increase from those actions. Our results suggest that
a modest reallocation of the payroll budget among stores could be expected to
yield a 2-3% increase in sales with no increase in cost.
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Reprinted with permission from
Knowledge@Wharton http://knowledge.wharton.upenn.edu
- the online research and business analysis journal of the Wharton School of the University of Pennsylvania.
About the Authors:
The authors are associated with
Operations and Information Management Department, The Wharton School, University of Pennsylvania.
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