I also have same problem. Please consider my example: I have a table for the number of incidents occurred in two-hour blocks (Ex. 0-2, 2-4, etc). The data for each block recorded over 4 years and it is heavily inflated with zeros. So I have a table like:   Day                     [0-2]         [2-4]        [4-6]    .......   [10-0] Match 1                  0             1             1       .......      13          March 2                  1             2             0       ........       2   . . . . March 30              0            10             0                      2     How can I compare the proportion of the number of attacks occurred during different time blocks in March? Please give me a hand in coding as well. Thank you!     Yazdan ... View more