| http://www.w3.org/ns/prov#value | - In ???Case B,??? we found that 99.99% of sales/costs were generated by all keywords with less than 2.5 years between first click and first impression, i.e. the keywords in the account with the highest CTR. (Note that using % of account age instead of years is a better indicator of which of these higher traffic/CTR keywords significantly contribution to total account sales/costs).
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