This examination was motivated by observing wild swings in the LFS estimates of the rate of postsecondary education in the adult working-age population (25 – 54). Reported values, while seeming to mimic the provincial and national movement when smoothed over time, varied significantly from year to year. Because of the heavy use this particular data-set sees, and concerns with reliability, the RDI has issued this methodology brief. This brief discusses the sources and impacts of LFS sampling variability (statistical accuracy).