<invoke name="query_sql"> <parameter name="sql">SELECT COUNT(*) AS n, ROUND(CORR(Daily_Usage_Hours, Sleep_Duration_Hours),3) AS usage_vs_sleep, ROUND(CORR(Daily_Usage_Hours, Academic_Performance_GPA),3) AS usage_vs_gpa, ROUND(CORR(Daily_Usage_Hours, Mental_Health_Index),3) AS usage_vs_mental, ROUND(CORR(Daily_Usage_Hours, Perceived_Stress_Score),3) AS usage_vs_stress, ROUND(CORR(Sleep_Duration_Hours, Academic_Performance_GPA),3) AS sleep_vs_gpa, ROUND(CORR(Sleep_Quality_Score, Mental_Health_Index),3) AS sleepq_vs_mental, ROUND(AVG(Daily_Usage_Hours),2) AS avg_usage, ROUND(AVG(Academic_Performance_GPA),2) AS avg_gpa FROM raw.Social_media_impact_on_life</parameter> <parameter name="purpose">Ground candidate research questions with headline correlations between usage and outcomes</parameter> </invoke>