Table 1.
Chi-square goodness of fit test for the occurrence of voles at each live trapping grid between June 1994 and July 2008 for each given month (number of months trapped), assuming equal probability of occurrence on a given month
| Month | Observed/expected frequency |
||
|---|---|---|---|
| Grid 10 | Grid 11 | Grid 12 | |
| January (14) | 6/6 | 5/4.3 | 7/6.9 |
| February (14) | 5/6 | 5/4.3 | 7/6.9 |
| March (14) | 5/6 | 5/4.3 | 7/6.9 |
| April (14) | 6/6 | 5/4.3 | 6/6.9 |
| May (14) | 5/6 | 4/4.3 | 7/6.9 |
| June (15) | 6/6.4 | 3/4.6 | 6/7.4 |
| July (15) | 6/6.4 | 2/4.6 | 7/7.4 |
| August (14) | 7/6 | 4/4.3 | 8/6.9 |
| September (14) | 7/6 | 5/4.3 | 6/6.9 |
| October (14) | 6/6 | 5/4.3 | 8/6.9 |
| November (14) | 7/6 | 2/4.3 | 7/6.9 |
| December (14) | 7/6 | 7/4.3 | 8/6.9 |
| χ2 | 1.221 | 1.326 | 1.048 |
| df | 11 | 11 | 11 |
| P | 0.999 | 0.676 | 0.999 |
Monte Carlo simulations (100,000 permutations of the multinomial sampling distribution) were used to estimate significance for grid 11, because the expected frequency was fewer than 5