https://www.khanacademy.org/math/class-9-tg/x06d55bfa213a79fd:statistics/x06d55bfa213a79fd:deviation-in-values-of-central-tendency/v/deviation-in-values-of-central-tendency 2025-10-06T14:00:44.591197305Z Deviation in Values of Central Tendency This video explores how changing each data value in a dataset affects the mean, median, and mode, using clear logic and simple examples. When every value is increased or decreased by the same amount, the mean shifts by that exact amount because it reflects the total sum. The median, being the middle value, also moves consistently with uniform changes, since the relative order of values remains intact. Through intuitive reasoning and visual comparisons, the video highlights how each measure responds differently to data changes. Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now!Unit link 00:00 Effect of deviation on mean 02:12 Rationale behind the effect 04:36 Effect of deviation on median 05:50 Effect of deviation on mode Khan Academy India is a nonprofit organization with the mission of providing a free, world-class education for anyone, anywhere. We have videos and exercises that have been translated into multiple Indian languages, and 15 million people around the globe learn on Khan Academy every month. Support Us: https://india.khanacademy.org/donate Created by Khan Academy Khan Academy video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Deviation in Values of Central Tendency This video explores how changing each data value in a dataset affects the mean, median, and mode, using clear logic and simple examples. When every value is increased or decreased by the same amount, the mean shifts by that exact amount because it reflects the total sum. The median, being the middle value, also moves consistently with uniform changes, since the relative order of values remains intact. Through intuitive reasoning and visual comparisons, the video highlights how each measure responds differently to data changes. Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now!Unit link 00:00 Effect of deviation on mean 02:12 Rationale behind the effect 04:36 Effect of deviation on median 05:50 Effect of deviation on mode Khan Academy India is a nonprofit organization with the mission of providing a free, world-class education for anyone, anywhere. We have videos and exercises that have been translated into multiple Indian languages, and 15 million people around the globe learn on Khan Academy every month. Support Us: https://india.khanacademy.org/donate Created by Khan Academy https://cdn.kastatic.org/ka-youtube-converted/SW3URqcQmzE.mp4/SW3URqcQmzE.mp4 382 Deviation in values of central tendency https://www.khanacademy.org/math/class-9-tg/x06d55bfa213a79fd:statistics/x06d55bfa213a79fd:deviation-in-values-of-central-tendency/e/deviation-in-values-of-central-tendency 2026-02-20T04:00:32.356270105Z Deviation in Values of Central Tendency In this exercise, we will learn about the concepts: (1) If x is added to each data value, the mean, mode and median will also increase by x. (2) If each observation is multiplied by x, the mean, mode, and median will also be multiplied by x. Khan Academy exercise