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# Common Values

This page contains supplementary values, types and enums that metrics use.

Install the metrics extra before using metrics APIs:

```bash
pip install "supervision[metrics]"
```

<div class="md-typeset">
    <h2><a href="#supervision.metrics.core.MetricTarget">MetricTarget</a></h2>
</div>

:::supervision.metrics.core.MetricTarget

<div class="md-typeset">
    <h2><a href="#supervision.metrics.core.AveragingMethod">AveragingMethod</a></h2>
</div>

:::supervision.metrics.core.AveragingMethod