CREATE TABLE table_27497 ("Year" FLOAT, "Population" FLOAT, "Index" FLOAT, "Violent" FLOAT, "Property" FLOAT, "Murder" FLOAT, "Forcible rape" FLOAT, "Robbery" FLOAT, "Aggravated assault" FLOAT, "Burglary" FLOAT, "Larceny Theft" FLOAT, "Vehicle Theft" FLOAT)

What was the largest number of aggravated assaults when there were 3811 robberies?
SELECT MAX("Aggravated assault") FROM table_27497 WHERE "Robbery" = '3811'
SELECT MAX("Aggravated assault") FROM "table_27497" WHERE "Robbery" = '3811'