What is the average and oldest age for each gender of student?
SELECT avg(age) ,  max(age) ,  sex FROM student GROUP BY sex
SELECT avg(age) ,  max(age) ,  sex FROM student GROUP BY sex
[{'avg(age)': 19.7, 'max(age)': 26, 'Sex': 'F'}, {'avg(age)': 19.5, 'max(age)': 27, 'Sex': 'M'}]