Question: What is the average Black, when White is less than 602, and when Total is greater than 10000?
SQL: SELECT AVG("Black") FROM "2-16176416-4" WHERE "White" < 602.0 AND "Total" > 10000.0;

Question: What is the sum of Yellow, when Category is bugre (indian), and when Amerindian is less than 5000?
SQL: SELECT SUM("Yellow") FROM "2-16176416-4" WHERE "Category" = 'bugre (indian)' AND "Amerindian" < 5000.0;

Question: What is the sum of Amerindian, when White is 602, and when Total is greater than 10000?
SQL: SELECT SUM("Amerindian") FROM "2-16176416-4" WHERE "White" = 602.0 AND "Total" > 10000.0;