PIAAC: Mean Adult Numeracy Proficiency, 2015

Numeracy is defined as the ability to access, use, interpret and communicate mathematical information and ideas in order to engage in and manage the mathematical
demands of a range of situations in adult life. To this end, numeracy involves managing a situation or solving a problem in a real context, by responding to
mathematical content, information, and ideas represented in multiple ways. The target population for the survey was the non-institutionalized population, aged 16-65
years, residing in the country at the time of data collection, irrespective of nationality, citizenship or language status.