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What is the average cost of all emergency room visits for female patients? Name the computed column as avgfemalecost. The result table should contain only one row and one column.

What is the average cost of all emergency room visits for female patients? Name the computed column as avgfemalecost. The result table should contain only one row and one column.

Database System Concepts
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Write an SQL query to extract the answer directly.

There are two csv files: visit.csv and patient.csv. Below is the description of the data in each File. The visit.csv contains data for 17,580 emergency room (ER) visits: Column Name Description | ID for each unique visit. ID for each unique patient. Reason for each ER visit. The values include: 'Pain back’, 'Difficulty Breathing', etc. Urgency of the visit reason. The values include: 'Lowest', 'Low', "Medium', 'High', 'Highest', 'Unknown'. How a patient is transported to the emergency room. The values include: Private Vehicle, EMS Ground, EMS Air, Walk, Public Trans, VisitID PatientID VisitReason Urgency ArrivalMode Police/Jail. HospAdmit Whether a patient is admitted to hospital after the emergency room visit. The values include: 'Yes' or 'No’. Cost of emergency room visit. Date of arrival to emergency room. Date of discharge from emergency room. Cost ArrivalDate DischargeDate The visit.csv (described above) includes data for 13,390 patients. The information for all these patients is stored in patient.csy: Column Name PatientID Description ID for each unique patient. Gender of a patient. The value is either 'Male' or 'Female'. Age of a patient. Gender Age
Transcribed Image Text:There are two csv files: visit.csv and patient.csv. Below is the description of the data in each File. The visit.csv contains data for 17,580 emergency room (ER) visits: Column Name Description | ID for each unique visit. ID for each unique patient. Reason for each ER visit. The values include: 'Pain back’, 'Difficulty Breathing', etc. Urgency of the visit reason. The values include: 'Lowest', 'Low', "Medium', 'High', 'Highest', 'Unknown'. How a patient is transported to the emergency room. The values include: Private Vehicle, EMS Ground, EMS Air, Walk, Public Trans, VisitID PatientID VisitReason Urgency ArrivalMode Police/Jail. HospAdmit Whether a patient is admitted to hospital after the emergency room visit. The values include: 'Yes' or 'No’. Cost of emergency room visit. Date of arrival to emergency room. Date of discharge from emergency room. Cost ArrivalDate DischargeDate The visit.csv (described above) includes data for 13,390 patients. The information for all these patients is stored in patient.csy: Column Name PatientID Description ID for each unique patient. Gender of a patient. The value is either 'Male' or 'Female'. Age of a patient. Gender Age
What is the average cost of all emergency room visits for female patients? Name the computed column as avgfemalecost. • The result table should contain only one row and one column.
Transcribed Image Text:What is the average cost of all emergency room visits for female patients? Name the computed column as avgfemalecost. • The result table should contain only one row and one column.
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