Database Reference
In-Depth Information
FIGURE 5.12
Cochran test output; SPSS.
“Yes. Not only were the task completion rates almost the same, but the Cochran
Q test showed, overwhelmingly, no difference. We got a
p
-value of 0.564, which is
obviously way above 0.05.”
Buzzkill stares at you blankly. His silence tells you he has no clue what you're
talking about. To break the uneasy silence, you make an offer.
“I could run an un-moderated usability test with much larger sample sizes, but
there's no guarantee we'll get different results.”
“Nah,” Buzzkill says, staring at his iPhone. You sense retreat. “I'll get my guys
to work on both.”
As Buzzkill leaves the conference room. The rest of the attendees give you
thumbs-up, and your buddy, Ajay, slaps you on the back:
“That's the irst time I've ever seen Buzzkill back down! Wow, that stats stuff
blew his mind! Nice work, buddy.”
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