Mark / Recapture Data - Period 1 10/11/2011
Table 1            
  A-total marked B-total recaptured C-marked & recaptured D=estimated population size F-acutal population size G - % error
small 25 52 0 0 1082 100%
medium 25 78 2 975 1082 10%
large 25 203 5 1015 1082 6%
             
Table 2            
  A-total marked B-total recaptured C-marked & recaptured D=estimated population size F-acutal population size G - % error
small 25 42 2 525 1051 50%
medium 25 52 2 650 1051 38%
large 25 186 7 664 1051 37%
             
Table 3            
  A-total marked B-total recaptured C-marked & recaptured D=estimated population size F-acutal population size G - % error
small 25 51 3 425 1095 61%
medium 25 80 3 667 1095 39%
large 25 219 7 782 1095 29%
             
Table 4            
  A-total marked B-total recaptured C-marked & recaptured D=estimated population size F-acutal population size G - % error
small 25 52 1 1300 844 -54%
medium 25 85 1 2125 844 -152%
large 25 177 3 1475 844 -75%
             
Table 5            
  A-total marked B-total recaptured C-marked & recaptured D=estimated population size F-acutal population size G - % error
small 25 54 0 0 1017 100%
medium 25 87 1 2175 1017 -114%
large 25 208 4 1300 1017 -28%
             
Table 6            
  A-total marked B-total recaptured C-marked & recaptured D=estimated population size F-acutal population size G - % error
small 25 55 1 1375 1257 -9%
medium 25 76 4 475 1257 62%
large 25 196 3 1633 1257 -30%
             

Average - Period 1
  Total recaptured sample size (average B) Average percent off (G)
small 51 41%
medium 76 19%
large 198 10%


Period 4
Table 1            
  A-total marked B-total recaptured C-marked & recaptured D=estimated population size F-acutal population size G - % error
small 25 39 0 0 1236 100%
medium 25 89 3 742 1236 40%
large 25 221 7 789 1236 36%
             
Table 2            
  A-total marked B-total recaptured C-marked & recaptured D=estimated population size F-acutal population size G - % error
small 25 55 2 688 1147 40%
medium 25 90 2 1125 1147 2%
large 25 223 3 1858 1147 -62%
             
Table 3            
  A-total marked B-total recaptured C-marked & recaptured D=estimated population size F-acutal population size G - % error
small 25 48 1 1200 1198 0%
medium 25 89 3 742 1198 38%
large 25 240 1 6000 1198 -401%
             
Table 4            
  A-total marked B-total recaptured C-marked & recaptured D=estimated population size F-acutal population size G - % error
small 25 51 1 1275 1106 -15%
medium 25 105 2 1313 1106 -19%
large 25 176 3 1467 1106 -33%
             
Table 5            
  A-total marked B-total recaptured C-marked & recaptured D=estimated population size F-acutal population size G - % error
small 25 48 0 0 1424 100%
medium 25 77 1 1925 1424 -35%
large 25 181 3 1508 1424 -6%
             
Table 6            
  A-total marked B-total recaptured C-marked & recaptured D=estimated population size F-acutal population size G - % error
small 25 40 2 500 1056 53%
medium 25 83 4 519 1056 51%
large 25 202 6 842 1056 20%

Average Period 4    
  Total recaptured sample size (average B) Average percent off (G)
small 47 46%
medium 89 13%
large 207 74%

Overall - 12 groups Average
     
  Total recaptured sample size (average B) Average percent off (G)
small 49 44%
medium 83 16%
large 203 42%


IF WE SAY THAT THE LARGE CUP MEASURE FOR GROUP 3 PERIOD 4 IS AN OUTLIER AND DELETE FROM THE COMBINED AVERAGES...

Table 3-Period 4
Table 3            
  A-total marked B-total recaptured C-marked & recaptured D=estimated population size F-acutal population size G - % error
small 25 48 1 1200 1198 0%
medium 25 89 3 742 1198 38%
large 25 240 1 6000 1198  
             

Period 4 Averages Becomes
Average Period 4    
  Total recaptured sample size (average B) Average percent off (G)
small 47 46%
medium 89 13%
large 207 9%

And the overall 12 group averages becomes
  Total recaptured sample size (average B) Average percent off (G)
small 49 44%
medium 83 16%
large 203 9%