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Table 5 Wheeler–Watson two-sample test results comparing each distribution of  t estimate to the distribution of  t a c t u a l

From: A comparison of methods for temporal analysis of aoristic crime

  W r
  Study area Group I Group II Group III
Method n= 303 n= 99 n= 110 n= 94
Start 4.73** 1.31** 1.72** 1.80**
Mid-point 1.53** 0.61** 0.53** 0.50**
End 3.10** 0.71** 1.28** 1.13**
Known-time     
n(tactual) = 303 0.06 0.03 0.05 0.12
n(tactual) = 26a 0.08 0.06 b 0.06
Random c 0.28** 0.19* 0.08 0.21*
Aoristic (tunit = 30min) 0.23* 0.21* 0.15 0.27*
  1. *p < 0.05, critical W r = 0.18.
  2. **p< 0.01, critical W r = 0.27.
  3. aMean value of W r  for 1,000 runs in which the known values of tknown were compared against an equal number of values randomly selected from the final sample of crimes.
  4. bOnly six offences were available for known-time analysis in this group.
  5. cMean value of W r  for tests on 100 distributions of trandom.