# ControlStats
<a name="API_ControlStats"></a>

Statistics for the control variant in an A/B test.

## Contents
<a name="API_ControlStats_Contents"></a>

 ** mean **   <a name="BedrockAgentCore-Type-ControlStats-mean"></a>
The mean evaluation score for the control variant.  
Type: Double  
Required: Yes

 ** sampleSize **   <a name="BedrockAgentCore-Type-ControlStats-sampleSize"></a>
The number of sessions evaluated for the control variant.  
Type: Integer  
Required: Yes

 ** variantName **   <a name="BedrockAgentCore-Type-ControlStats-variantName"></a>
The name of the control variant.  
Type: String  
Required: Yes

## See Also
<a name="API_ControlStats_SeeAlso"></a>

For more information about using this API in one of the language-specific AWS SDKs, see the following:
+  [AWS SDK for C\+\+](https://docs.aws.amazon.com/goto/SdkForCpp/bedrock-agentcore-2024-02-28/ControlStats) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/bedrock-agentcore-2024-02-28/ControlStats) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/bedrock-agentcore-2024-02-28/ControlStats)