Research Article

A Grey Theory Based Approach to Big Data Risk Management Using FMEA

Table 3

Occurrence rating scale.

RatingDescriptionPotential failure rate

10Certain probability of occurrenceFailure occurs at least once a day or almost every time.
9Failure is almost inevitable Failure occurs predictably or every three or four days.
8Very high probability of occurrenceFailure occurs frequently or about once per week.
7
6Moderately high probability of occurrence Failure occurs about once per month.
5
4Moderate probability of occurrenceFailure occurs occasionally or once every three months.
3
2Low probability of occurrenceFailure occurs rarely or about once per year.
1Remote probability of occurrenceFailure almost never occurs; no one remembers the last failure.