CREATE TABLE table_1546 ("Barangay" TEXT, "Area  ( km\\u00b2 ) " TEXT, "Population  ( 2007 ) " FLOAT, "Population  ( 2010 ) " FLOAT, "Pop. density  ( per km\\u00b2 ) " TEXT)

Name the population density when barangay is tiptip
SELECT "Pop. density (per km\u00b2)" FROM table_1546 WHERE "Barangay" = 'Tiptip'
SELECT "Pop. density (per km\u00b2)" FROM "table_1546" WHERE "Barangay" = 'Tiptip'