Q: 3
An analyst analyzes 1,000 Facebook video campaigns and calculates there is a correlation of r = 0.6
between view duration of a campaign and additional ad recall lift. What should the analyst tell the
company about the relationship between view duration and ad recall lift?
Options
Discussion
Makes sense to pick D for this one
Its D. With r = 0.6, r squared is 0.36, so 36%, but the closest match is option D at 40%. I think they rounded it up in the answer options. Agree?
Option D
B is wrong, D. The exam usually expects you to round up in these scenarios, even though 36% (B) is more exact.
Probably D, since r = 0.6 means r squared is 0.36 or 36%. The question doesn't offer 36%, so 40% (option D) is as close as we get. B looks tempting but isn't what the options want-anyone see it differently?
Seen similar in the exam guide, D is what you'd pick here.
D, not B
Its B here, since r squared is 0.36 which matches 36%. You get that by squaring the correlation (0.6 x 0.6). Unless they're asking for an estimate, but the question doesn't say "about" or "closest." Pretty sure that's what they want to see.
Why not just ask for the exact percentage? 36% matches r squared but the options force us to round up for D.
I don’t think it’s D. B.
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