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National Council of Teachers of Mathematics 2014 Annual Meeting and Exposition

Please note: The NCTM conference program is subject to change.

461- Why Variances Add—And Why It Matters

Friday, April 11, 2014: 12:30 PM-1:30 PM
R09 (Convention Center)
Lead Speaker:
Dave Bock

  • 22780BOCK_WhyVariancesAdd.pdf (1.5 MB)

  • The second most important theorem in statistics says to add variances to find the standard deviation of the sum or difference of independent random variables. We'll see why the Pythagorean theorem of statistics is true and how to make it make sense. And we'll see where it matters in probability, inference, and even the central limit theorem itself.

    Presentation Format: 9-12 Session
    Grade Band Audience: 9 to 12, Higher Education

    See more of: 9-12 Session