12. Wat is TPI?
TPI vergeleken met usability testing:
Geen ‘hardopdenk methode’
Er zijn geen/minimale onderbrekingen
TPI maakt enkel gebruik van ‘gesloten taken’
23. Opinion palm oil: What is the position/opinion of Milieudefensie on the use of
palm oil as biomass.
Success/Failure Rates Completion Time
Task 3 performance = Critical Issues (0-34) TPI = 0
Good
0-2.25 x Target
* All Failure times treated as 300 seconds
Minor Time Issue
2.25-3.25 x Target
Major Time Issue
3.25-5.75 x Target
Critical Time Issue
Above 5.75 x Target
41. Download firmware: Obtain the latest firmware for your RV082 router
compatible with Version 3 hardware.
Very Good TPI = 75Task 1 performance =
Success Rate Comparisons
August 2011 February 2012
42. Completion Time Comparisons
Download firmware: Obtain the latest firmware for your RV082 router
compatible with Version 3 hardware.
Very Good TPI = 75Task 1 performance =
Good Minor Major Critical
48. www.sabelonline.nl
BUREAU VOOR DIGITALE KLANTENSERVICE EN ONLINE COMMUNICATIE
Internetadviesbureau Sabel Online weet alles van digitaal klantcontact en online
dialoog. We onderzoeken, adviseren, creëren en verbeteren. Zo helpen we je
structureel klinkende resultaten te boeken. Intern en extern. Via alle online kanalen.
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T +31 88 227 22 38
lonneke@sabelonline.nl
@Lonnek
49. Minor Issues (50-59)
Excellent (80-100)
Good (70-79)
Fair (60-69)
Major Issues (35-49)
Critical Issues (0-34)
Time Penalty:
Task completion time as multiple of target time
e.g. 3 = 3 times as long as the target time
0
10
20
30
40
50
60
70
80
90
100
1 2 3 4 5 6
TPI