A 30-day thumbnail ROI test is the most reliable growth investment. This course teaches the test design (clean test video, three thumbnail variants, 7-day windows), the sample-size math, and the decision ritual. We also cover what to do when the test produces no winner.
What you'll learn
A 30-day thumbnail-test calendar you can run every month
Clean-test-video requirements so the data is real
Sample-size math: when to commit and when to keep testing
What to do when the test produces no winner
Post-test decision ritual without bias
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