CREATE TABLE candidate (candidate_id DECIMAL, people_id DECIMAL, poll_source TEXT, date TEXT, support_rate DECIMAL, consider_rate DECIMAL, oppose_rate DECIMAL, unsure_rate DECIMAL)
CREATE TABLE people (people_id DECIMAL, sex TEXT, name TEXT, date_of_birth TEXT, height DECIMAL, weight DECIMAL)

Find the average height and weight for all males (sex is M).
SELECT AVG(height), AVG(weight) FROM people WHERE sex = 'M'
SELECT AVG("height"), AVG("weight") FROM "people" WHERE "sex" = 'M'