To perform a probit analysis
main topic 

How you run the analysis depend on whether your worksheet is in "event/trial" or "response/frequency" format.

1    Choose Stat > Reliability/Survival > Probit Analysis.

2    Do one of the following:

·    Choose Responses in event/trial format.

1    In Number of events, enter one column of events (failures).

2    In Number of trials, enter one column of trials.

·    Choose Responses in response/frequency format.

1    In Response, enter one column of response values.

2    If you have a frequency column, enter the column in Frequency.

3    In Stress (stimulus), enter one column of stress or stimulus levels.

4    If you like, use any of the dialog box options, then click OK.