Using Programs with Data Practice Test

A wearable device collects numerical heart rate readings and step counts throughout the day and stores them in a user history. A health app computes hourly averages, flags unusually high heart rates during rest, and summarizes activity trends. It then sends feedback like “take a break” or “increase activity” based on those summaries. In the described system, which part of the program's process directly influences the outcome?

A city collects numerical speed and car-count data from cameras at intersections and stores it in time-stamped logs. A program detects congestion by comparing current speeds to typical speeds for that time of day. It then adjusts traffic light durations to improve flow during rush hour. Based on the scenario above, what is a potential limitation of the data processing method described?