Visitors are part of the conversion report when they:
Attribution measures whether visitors that hit the touchpoint are more likely to convert than visitors in the conversion segment. Thus, you compare conversion rates of touchpoint visitors to the average conversion rate of the visitor segment, specified in the conversion definition.
NOTE: For the purpose of the report, visitors that complete the conversion event are considered as "converted" for this specific conversion definition.
Once you know how many unique hits a touchpoint has and know the conversion rate for a specific conversion definition, you can calculate the attribution ratio. The attribution ratio gives you a quantitative figure of how much a touchpoint affects conversion. The ratio basically measures how many times the conversion rate for visitors who hit the touchpoint is higher or lower than the conversion rate for all visitors in the tracked segment.
NOTE: When calculating attribution ratio, keep in mind that touchpoint visitors are all visitors who satisfy the conversion definition and hit a touchpoint during the conversion window.
In general, attribution ratio is calculated using the following formula:
Attribution ratio = (Conversion rate of touchpoint visitors / Conversion rate of visitors in conversion segment) – 1
Where for each conversion:
Conversion rate of touchpoint visitors = Visitors that hit the touchpoint and then converted / Visitors that hit the touchpoint during the conversion window
Conversion rate of conversion segment = Unique conversions / Visitors in conversion segment
NOTE: You subtract 1 to take into account the improvement or change in conversion rates ratio. For example, if Conversion rate of touchpoint contacts = Conversion rate of conversion segment, then the ratio would not make sense. By subtracting 1, you can have negative and positive conversion rate ratios.
The higher the attribution ratio, the bigger impact on conversion a touchpoint has.
Following is a simple example illustrating attribution calculation for a specific conversion:
Conversion: Buy laptop from quantum.com
Visitors in conversion segment
Touchpoint: Download laptop brochure
Visitors who hit touchpoint and converted
Conversion rate of touchpoint visitors
(5/10) -1 = -0.5
(50/15) -1 = 2.3
In the example above, you can analyze the results for different conversion windows and compare conversion rates and attribution ratios. It becomes apparent that even though with time conversion rate increases from 10% to 15%, visitors that hit the touchpoint convert at much higher rates, compared to the visitors that did not hit the touchpoint.
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