https://www.khanacademy.org/math/statistics-tx/x2d551a71b7f6c307:unit-5-variability-probability-and-random-variables/x2d551a71b7f6c307:sources-of-variability/v/identifying-sources-of-variability 2026-06-23T13:38:27.041531116Z Identifying sources of variability Sal examines two pairs of scenarios, and identifies which scenario exhibits a specific source of variability and why. Sal Khan video https://cdn.kastatic.org/ka_thumbnails_cache/806cec9b-3796-4eaa-a1c3-1afb67155227_1280_720_base.png Identifying sources of variability Sal examines two pairs of scenarios, and identifies which scenario exhibits a specific source of variability and why. https://cdn.kastatic.org/ka-youtube-converted/cjiBPL0HJTc.mp4/cjiBPL0HJTc.mp4 246 Sources of variability https://www.khanacademy.org/math/statistics-tx/x2d551a71b7f6c307:unit-5-variability-probability-and-random-variables/x2d551a71b7f6c307:sources-of-variability/e/identify-sources-of-variability 2026-06-23T13:53:18.04011831Z Identify sources of variability Distinguish among different sources of variability, including measurement, natural, induced, and sampling variability Nate Kinast exercise