Open Access
Table 4
The analysis of the t-test for standard deviations of DEF failures in 2010–2014 for 24 h+, 24 h−, 48 h+, 48 h−, 72 h+ and 72 h−.
| Variable | Normality | Homogeneity of variance | n | SD | t-test |
|---|---|---|---|---|---|
| SD 24 h+ | W = 0.92 | 18 | 23.27 | ||
| p = 0.12 | F = 6.75 | t = 3.76 | |||
| SD 24 h− | W = 0.91 | p = 0.0003 | 18 | 7.42 | p = 0.0006 |
| p = 0.10 | |||||
| SD 48 h+ | W = 0.96 | 18 | 20.26 | ||
| p = 0.62 | F = 2.38 | t = 1.88 | |||
| SD 48 h− | W = 0.96 | p = 0.08 | 18 | 14.16 | p = 0.07 |
| p = 0.54 | |||||
| SD 72 h+ | W = 0.95 | 14 | 16.80 | ||
| p = 0.53 | F = 2.75 | t = 1.92 | |||
| SD 72 h− | W = 0.89 | p = 0.08 | 14 | 11.44 | p = 0.07 |
| p = 0.09 |
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.