If your data indicate the number of events (failures) and the total number of trials at each stress level, complete the following steps.
- In Number of events, enter the column that contains the number of events (failures).
- In Number of trials, enter the column that contains the total number of items that were tested at each stress level.
- In Stress (stimulus), enter a column of stress or stimulus levels.
- If you want to include a factor, enter the column in Factor (optional). The factor is an additional categorical variable, such as a group classification, that may also affect the failure response (in addition to the stress or stimulus).
In this worksheet, the Temp column contains the stress levels. The Failures column contains the number of events, which is the number of items that failed at the stress level. The Trials column contains the total number of items tested at each stress level. For example, at a temperature of 140, 7 of 10 items failed (7 events).