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Table 4 Pairwise ρ values calculated using the Mann-Whitney test for frequency that transparent authentication was turned off for the tasks that were significantly different

From: Understanding user perceptions of transparent authentication on a mobile device

Task Group Participant category
   All Some None
Read document All NaN < 0.0001
  Some < 0.0001
  None
Take photo All NaN 0.0137
  Some 0.0137
  None
Send email All 0.1675 0.0318
  Some 0.0016
  None
View photo All 0.3681 0.0636
  Some 0.0137
  None
Make international call All 0.3681 0.1444
  Some 0.0336
  None
  1. ρ<0.05 are significant. The two NaN values mark cases where both categories had no instances of turning off security.