Which metric best indicates consistency of service?

• A. First Call Resolution rate
• B. Net Promoter Score
• C. Customer Satisfaction Score
• D. Average Handle Time

Answer: (A)

Consistency of service means customers experience the same level of problem resolution in each interaction. First Call Resolution rate captures this directly by measuring how often an issue is resolved during the initial contact without needing a follow-up or escalation. A high rate shows that agents and processes reliably resolve problems in one touch, signaling a consistent standard of service across conversations.

Other metrics look at different angles. Net Promoter Score gauges overall loyalty and willingness to recommend, influenced by many factors beyond a single interaction. Customer Satisfaction Score measures satisfaction with a specific interaction but can be swayed by expectations or situational factors. Average Handle Time focuses on speed, not whether the issue was resolved on the first contact. So, for assessing consistency of service, First Call Resolution rate is the most direct indicator.