CREATE TABLE candidate (Candidate_ID INT, People_ID INT, Poll_Source TEXT, Date TEXT, Support_rate FLOAT, Consider_rate FLOAT, Oppose_rate FLOAT, Unsure_rate FLOAT)
CREATE TABLE people (People_ID INT, Sex TEXT, Name TEXT, Date_of_Birth TEXT, Height FLOAT, Weight FLOAT)

Bar chart of total number of height from each sex
SELECT Sex, SUM(Height) FROM people GROUP BY Sex
SELECT "Sex", SUM("Height") FROM "people" GROUP BY "Sex"