Hi I have a precipitation frequency data from 1989 to 2019. I want to see a trend line between year and the precipitation frequency using Poisson regression. I wanted to know weather precipitation volatility has increased in latter years. The frequency data contains 0, 1, 2, and 3 numbers. I have JMP 14 but not jmp pro. Any advise.
My data look like this:
1989 - Frequency 0
1990 - Frequency 0
1991 - Frequency 1
1992 - Frequency 0
1993 - Frequency - 0
1994- Frequency - 0
1895- Frequency - 2
