The type of experiment metric.

[Proto definition ![GitHub](https://developers.google.com/site-assets/logo-github.svg)](https://github.com/googleapis/googleapis/blob/master/google/ads/googleads/v25/enums/experiment_metric.proto)

| Enums ||
|---|---|
| ## `AVERAGE_CPC` | The goal of the experiment is avg cpc. |
| ## `CLICKS` | The goal of the experiment is clicks. |
| ## `COMPLETED_VIDEO_VIEWS` | The goal of the experiment is completed video views. |
| ## `CONVERSIONS` | The goal of the experiment is conversions. |
| ## `CONVERSIONS_PER_INTERACTION_RATE` | The goal of the experiment is conversion rate. |
| ## `CONVERSIONS_VALUE_PER_COST` | The goal of the experiment is conversion value per cost. |
| ## `CONVERSION_VALUE` | The goal of the experiment is conversion value. |
| ## `COST` | The goal of the experiment is cost. |
| ## `COST_PER_CONVERSION` | The goal of the experiment is cost per conversion. |
| ## `CTR` | The goal of the experiment is clickthrough rate (CTR). |
| ## `CUSTOM_ALGORITHMS` | The goal of the experiment is custom algorithms. |
| ## `IMPRESSIONS` | The goal of the experiment is impressions. |
| ## `INCREMENTAL_CONVERSIONS` | The goal of the experiment is incremental conversions. |
| ## `UNKNOWN` | The value is unknown in this version. |
| ## `UNSPECIFIED` | Not specified. |