CREATE TABLE table_37753 ("Call sign" TEXT, "Frequency MHz" FLOAT, "City of license" TEXT, "ERP W" FLOAT, "Class" TEXT, "FCC info" TEXT)

What is the frequency for the city of Lamar, Colorado?
SELECT AVG("Frequency MHz") FROM table_37753 WHERE "City of license" = 'lamar, colorado'
SELECT AVG("Frequency MHz") FROM "table_37753" WHERE "City of license" = 'lamar, colorado'