Brian Carter attempts to find the statistical correlation between local search factors and actual rankings. The search factors he analyzes include number of reviews, instances of the keyword in the
title, photos and videos, user content, in-bound links, and Web pages.
Several scatter graphs provide insight. From those scatter graphs, Carter found R2 values. "I suspect someone
from Google will read this and laugh at my non-PhD-ish bafflement," he writes. "Nonetheless, I know where to go next, so there will be a part two."
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