My data is panel and its on employee attendance and weather. I observe employees daily attendance for about 2-3 years. So I have a panel at the daily level for each employee.
I have a binary X variable that measures the number of days the maximum temperature was in a particular bin in my sample. My Y variable is also binary and it measures absenteeism from the work place. I include a bunch of fixed effects (such as day of the week) in my regression and find no impact of the temperature bin variables on Y.
Now I wish to investigate whether this is because I don't have much variation in my temperature bin variables. However,I am not sure how I can do this. Any suggestions would be of great help.