# What is the Negative Predictive Value?

Given a *negative *prediction, the **Negative Predictive Value** (NPV) is the performance metric that tells you the probability that the true value is *negative*.

- It is closely related to the Positive Predictive Value, which is completely analogous.
- The complement of the Negative Predictive Value is the False Omission Rate. Consequently, they sum up to 1.
- The Negative Predictive Value gives you the answer to the question:
**“If the prediction is negative, what share of my prediction is truly negative?”** - The Negative Predictive Value is calculated as follows: