What is primarily assessed when looking at customer demographics?

Customer demographics focus on quantifiable data that provides insights into the characteristics of a customer base. This includes measurable factors such as income, age, household size, education level, and marital status. By analyzing this data, retailers can better understand their customers' needs, preferences, and behaviors, which in turn allows for more effective marketing strategies and product offerings.

For instance, knowing the average income level in a certain demographic can help a retailer determine the types of products to stock and the pricing strategy to adopt. Household size can influence product packaging sizes or marketing messages. Understanding these quantifiable aspects enables businesses to tailor their approaches to meet the specific needs of their target audience effectively.

The other choices focus on elements that do not assess demographics. Subjective opinions, like those related to customer experiences, are valuable but are not demographic data. The physical layout of a store pertains to operational design, and while important for the shopping experience, it does not provide demographic insight. Lastly, customer feedback on service quality pertains to perception and satisfaction rather than the concrete characteristics of the customer base itself.