Valsts valodas centra izstrādātie sociālo jautājumu, socioloģijas un statistikas termini

Konteksts: [..] Some very long-running panel surveys may be able to supplement the data collected on income at each wave with data on periods covered in previous waves and possibly with retrospective questions to cover periods before the survey began, but here again there will be recall problems [..]
Avots: European Commission, Description of Target Variables: Cross-sectional and Longitudinal