What is the maximum market share of the browsers?
select max ( market_share ) from browser
What is the minimum market share of all browsers?
select min ( market_share ) from browser
What is the average market share of all browsers?
select avg ( market_share ) from browser
Can you list the names of all browsers that have market shares above the average?
select name from browser where market_share > ( select avg ( market_share ) from browser )