The type of experiment metric.
| Enums | |
|---|---|
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                Not specified. | 
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                The value is unknown in this version. | 
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                The goal of the experiment is clicks. | 
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                The goal of the experiment is impressions. | 
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                The goal of the experiment is cost. | 
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                The goal of the experiment is conversion rate. | 
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                The goal of the experiment is cost per conversion. | 
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                The goal of the experiment is conversion value per cost. | 
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                The goal of the experiment is avg cpc. | 
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                The goal of the experiment is ctr. | 
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                The goal of the experiment is incremental conversions. | 
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                The goal of the experiment is completed video views. | 
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                The goal of the experiment is custom algorithms. | 
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                The goal of the experiment is conversions. | 
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                The goal of the experiment is conversion value. |