Which type of external data does an analyst at a retailer use?

The number of store visits is an internal metric that reflects customer traffic patterns and is typically collected through sales data or foot traffic analysis. While it is valuable for understanding store performance, it does not qualify as external data, as it is derived from the retailer's own operations.

Open hours of peak sales are also an internal operational detail that indicates when a store experiences its highest sales volume. This information is useful for staffing and inventory management but is not considered external data, as it pertains solely to the retailer's own sales dynamics.

Store inventory refers to the stock levels of products available for sale within a specific retailer. This is an internal data point crucial for supply chain management and operational efficiency but does not represent external data sources, which provide insights beyond the immediate control of the retailer.