Bedrock Agentcore > Structures > ControlStats ControlStats¶ Structure Class¶ ControlStats dataclass ¶ Statistics for the control variant in an A/B test. Attributes¶ mean instance-attribute ¶ mean: float The mean evaluation score for the control variant. sample_size instance-attribute ¶ sample_size: int The number of sessions evaluated for the control variant. variant_name instance-attribute ¶ variant_name: str The name of the control variant.