excel - Bird reporting rate change equation -


i hope can help...

i want analyse citizen science data on bird species distribution. aim map change in species estimated abundances (using reporting rates: r1 , r2, project 1 project 2 respectively). resulting change value needs proportion specific grid cell (not % have it). underlying issue however, 1 cannot log-transform negative values.

the data have access 1) grid cell coordinates (lat. , long.) , projects 1 & 2 respectively: 2.1) number of cards/survey lists submitted each cell, 2.2) amount of times species recorded in each cell , 2.3) actual reporting rate cell (r1 , r2) calculated 2.1 , 2.2 %.

example of grid cell's data:

number of cards r1 = 5

total times recorded r1 = 1

r1 = 20%

number of cards r2 = 5

total times recorded r2 = 0

r2 = 0%

from above , following statistician's response, have following questions you:

  • what "m1"and "n1" in equation below (for r1 in case) and
  • how derive median value mentioned.

fyi not statistician , hope community can better explain excerpt below.

statistician's technical response


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