<invoke name="tool_call"> <parameter name="reasoning">Check whether the Overall_Impact classifier cleanly separates records on the key measures; this is a candidate natural segmentation.</parameter> <parameter name="tool">query_sql</parameter> <parameter name="args">{"sql":"SELECT Overall_Impact, COUNT(*) AS n, ROUND(AVG(Daily_Usage_Hours),2) AS avg_daily_hours, ROUND(AVG(Sleep_Duration_Hours),2) AS avg_sleep, ROUND(AVG(Sleep_Quality_Score),2) AS avg_sleep_quality, ROUND(AVG(Perceived_Stress_Score),2) AS avg_stress, ROUND(AVG(Mental_Health_Index),2) AS avg_mental_health, ROUND(AVG(Academic_Performance_GPA),2) AS avg_gpa, ROUND(AVG(CASE WHEN Late_Night_Usage THEN 1.0 ELSE 0 END),2) AS late_night_share FROM raw.Social_media_impact_on_life GROUP BY Overall_Impact ORDER BY avg_daily_hours","purpose":"Profile Overall_Impact segments across measures","source":"raw"}</parameter> </invoke>