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Just, please, plot the data if you have gathered some time-to-failure data, or you have the breakdown dates for a piece of equipment. Any data really. It could be your review of your car maintenance records and notes and dates of repairs. You may have some data from field returns. You have a group of numbers and you need to make some sense of it. Just, please, plot the data.
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Take the average
Finding the average seems like a great first step. Let's summarize the data in some fashion. Let's say I have the number of hours each fan motor ran before failure. I can tally up the hours, TT, and divide by the number of failures, r. This is the mean time to failure.
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