Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE country (population INTEGER, surfacearea INTEGER, continent VARCHAR)

### Question ###
What is the total population and average area of countries in the continent of North America whose area is bigger than 3000 ?

### Accurate SQL ###

SELECT SUM(population), AVG(surfacearea) FROM country WHERE continent = "north america" AND surfacearea > 3000