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While perusing my Adwords campaign today, I started playing around with the graphing options.  I normally let the numbers speak for themselves and ignore the graph, but today I found a particularly interesting tidbit.

Adwords CTR vs COST

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What I found is this:

DAILY CTR appears to be closely correlated to DAILY COST

How can this be?  By this hypothesis, the more I spend on ads each day, the higher my click-through-rate would be.   While this sounds like something I shouldn’t complain about, I don’t understand why these two items would be proportional.

Has anyone else experienced this type of oddity?