How often is World Statistics Day celebrated — annually, biennially, or every five years?

World Statistics Day is celebrated every five years. The United Nations General Assembly decided to mark the occasion at this interval to allow sufficient time for global progress in statistical innovation and capacity-building. Since its inception in 2010, it has been observed in 2015 and 2020, with each event introducing a new theme aligned with global priorities, such as sustainable development and trustworthy data. The five-year cycle emphasizes the continuous evolution of data systems and encourages nations to evaluate their advancements in statistical methods. This periodic celebration ensures that the global statistical community comes together meaningfully to reflect, share knowledge, and renew its commitment to accurate and transparent data.