The 52-week moving window used to evaluate Salmonella performance represents data from how many weeks?

• A. 8 weeks
• B. 52 weeks
• C. 26 weeks
• D. 104 weeks

Answer: (B)

A moving window uses a fixed span of time to compute the performance metric, so the window length determines how much history is included. A 52-week window pulls in the most recent year of data, smoothing weekly fluctuations while still reflecting current trends in Salmonella performance. The other spans would either be too short to capture seasonal patterns (eight weeks) or too long and slow to respond (twenty-six weeks or about half a year; one hundred four weeks or two years). So this window represents data from about one year.