Research Article
A Grey Theory Based Approach to Big Data Risk Management Using FMEA
Table 3
Occurrence rating scale.
| Rating | Description | Potential failure rate |
| 10 | Certain probability of occurrence | Failure occurs at least once a day or almost every time. | 9 | Failure is almost inevitable | Failure occurs predictably or every three or four days. | 8 | Very high probability of occurrence | Failure occurs frequently or about once per week. | 7 | 6 | Moderately high probability of occurrence | Failure occurs about once per month. | 5 | 4 | Moderate probability of occurrence | Failure occurs occasionally or once every three months. | 3 | 2 | Low probability of occurrence | Failure occurs rarely or about once per year. | 1 | Remote probability of occurrence | Failure almost never occurs; no one remembers the last failure. |
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