Where can I find average inventory turnover for a particular industry?
Use RMA's eStatement Studies, which can be searched by industry name or NAICS code. There are figures available for total Inventory, Cost of Sales/Inventory (typically the calculation for inventory turnover) as well as Change in Inventory.
NOTE: Since this source often includes figures for upper, median and lower within each line item, it can be easier to read/interpret if you use the Export option to open the report in Excel.
The Almanac of Business & Industrial Financial Ratios also includes Inventory Turnover for many industries. It is organized by NAICS code. You will find this book on the 2nd floor of Pius Library.
As always, if you need any assistance, please ask a librarian.