Chapter 18 for statistics requires a statistical infrastructure based on principles such as impartiality, reliability, transparency, confidentiality of individual data, and dissemination of official statistics. The National Statistical Institute serves as a reference point for methodology, production, and dissemination of statistical information. It covers methodology and procedures for data collection in various fields such as economics, demographics, society, business, transportation, environment, science, and technology. Within Chapter 18, demographic and social statistics, economic statistics, sectoral statistics, environmental statistics, and multidomain statistics are included. The objective of this chapter is to harmonize statistical practices to ensure transparency, coordination, and efficient use of statistics, in line with international standards and accepted methodologies.