Supervisors need to account for statistical between the time officers spend on reactive activities (such as taking burglary reports) and availability for time to do proactive police work (such as traffic enforcement).

To answer this question, supervisors need to follow these steps:

1. Data Collection: The first step is to collect data on how much time officers spend on reactive activities and how much time they spend on proactive police work. This could be done through time-tracking software or manual logging.

2. Data Analysis: Once the data is collected, it needs to be analyzed. This could involve calculating averages, medians, or other statistical measures to understand the distribution of time spent on different activities.

3. Identify Discrepancies: After analyzing the data, supervisors should identify any significant discrepancies between the time spent on reactive and proactive activities. For example, if officers are spending a disproportionate amount of time on reactive activities, this could indicate a need for more staff or a re-allocation of duties.

4. Implement Changes: Based on the findings from the data analysis, supervisors should implement changes to ensure a more balanced distribution of time between reactive and proactive activities. This could involve hiring more officers, re-assigning duties, or implementing new policies or procedures.

5. Monitor and Adjust: After changes are implemented, supervisors should continue to monitor the distribution of time and make further adjustments as necessary. This is an ongoing process of continuous improvement.