Problem-Solving and Analytics Flashcards

A detective is building a timeline of events for a case. Two witnesses give times that differ by 30 minutes for the same event. What is the best analytical approach?

Answer: Cross-reference with objective evidence such as timestamps, receipts, or surveillance footage

Objective timestamped evidence provides a more reliable anchor for a timeline than reconciling two subjective human recollections.

A department is evaluating two patrol schedules. Schedule A costs $400,000 per year and reduces crime by 12%. Schedule B costs $250,000 and reduces crime by 8%. Which statement best represents an analytical cost-effectiveness comparison?

Answer: Schedule B achieves a better crime-reduction-per-dollar ratio

Schedule A reduces crime at $33,333 per percentage point; Schedule B at $31,250 per point, making B slightly more cost-effective per unit of crime reduction.

An officer responds to a report of a suspicious person. Upon arrival, the officer finds someone matching the description who provides a plausible explanation for their presence. What is the most analytically sound action?

Answer: Document the encounter, note the explanation, and assess whether further inquiry is warranted

Matching a description establishes reasonable grounds for initial inquiry, but a plausible explanation shifts the analysis toward documentation and assessment rather than detention.

A crime analyst finds that shoplifting incidents at a retail strip increased by 60% after a security guard was laid off. Six months later, a guard is rehired and incidents drop 55%. What does this pattern most strongly support?

Answer: Visible security presence has a deterrent effect on shoplifting

A clear inverse correlation between security presence and crime rate, observed across both removal and reinstatement, strongly supports a deterrence effect.

During a debrief, a supervisor reviews five officers' body camera footage for the same incident. Officers 1-4 are consistent; Officer 5's footage shows a different sequence of events. What is the most analytically appropriate response?

Answer: Review all footage carefully and investigate the source of the discrepancy

One discrepant account warrants careful investigation to determine whether it reflects a different vantage point, a recording error, or a material contradiction.

A watch commander must allocate 4 available officers across 3 districts. District X had 40 incidents last week, District Y had 30, and District Z had 10. Using proportional allocation, how many officers should be assigned to District X?

Answer: 2

District X represents 40/80 = 50% of incidents; 50% of 4 officers = 2 officers.

An officer is reviewing a suspect's alibi, which states the suspect was at a restaurant from 7-9 PM. The officer confirms the restaurant was open and the suspect has a receipt. However, the crime occurred 10 minutes away. What analytical conclusion is most appropriate?

Answer: The receipt confirms presence at 7 PM but does not account for the full 7-9 PM window without additional corroboration

A receipt proves the suspect was there at checkout time but does not continuously account for their whereabouts throughout the alibi window without witness or surveillance corroboration.