Small standard deviations in the MTBF distribution of a machine tend to support a policy of preventive maintenance for that machine.

Question

Quizplus · Accepted Answer

A small standard deviation means that the data points in the distribution are close to the mean. This indicates that the machine's performance is consistent and predictable. Preventive maintenance can be scheduled at regular intervals, and is more likely to be effective in preventing unexpected failures if the machine's MTBF distribution has a small standard deviation.

Small Standard Deviations in the MTBF Distribution of a Machine