---
title: "updateMeanAndVariance(with:batchNormalizationState:)"
framework: metalperformanceshaders
role: symbol
role_heading: Instance Method
path: "metalperformanceshaders/mpscnnbatchnormalizationdatasource/updatemeanandvariance(with:batchnormalizationstate:)"
---

# updateMeanAndVariance(with:batchNormalizationState:)

## Declaration

```swift
optional func updateMeanAndVariance(with commandBuffer: any MTLCommandBuffer, batchNormalizationState: MPSCNNBatchNormalizationState) -> MPSCNNNormalizationMeanAndVarianceState?
```