Why there are so many people who don’t have common sense

(1)The ratio of the 20th National Assembly member-elect to the Korean population and the ratio of the former to the Korean population
(2)15 years of age or older as of January 2016
(3)92 out of 300 and 44.5 million out of 11.63 million out of 300
(4)Data: National Election Commission, National Statistical Office, National Police Agency
(5)Data Journalism Team Data Collection Analysis Yoon Ji-hee Lee Ji-yeon Infographic Im Yuna