From Ramanujan to calculus cocreator Gottfried Leibniz, many of the world's best and brightest mathematical minds have belonged to autodidacts. And, thanks to the Internet, it's easier than ever to follow in their footsteps (or just finish your homework or study for that next big test). With this installment from Internet pedagogical superstar Salman Khan's series of free math tutorials, you'll learn how to work with surveys and samples in general statistics.
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How To: Calculate Faster Than a Calculator

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How To: Remember "greater than" & "less than" symbols

How To: Use ">" (greater than) and "<" (less than) symbols

How To: Do long division without a calculator

How To: Find the x & y intercepts of rational functions

How To: Learn Calculus in 20 minutes

How To: Find a number given Its percent

How To: Calculate the height and volume of a pyramid

Find the discriminant (DELTA): quadratic equation

How To: Simplify surds (improper square roots)

How To: Find Xbar with the Zscore formula

How To: Calculate percentage growth rates in calculus

How To: Solve nonlinear systems of equations by graphing

How To: Calculate the area of a parallelogram

How To: Convert between diameter and radius

How To: Find a missing coordinate given: coordinate & equation

How To: Find a missing side of a triangle, similar to another

How To: Find the opposite and absolute value of a number

How To: Determine if a point lies on a line in slope intercept

How To: Calculate Faster Than a Calculator

How To: Find the Percent Given Two Numbers

How To: Remember "greater than" & "less than" symbols

How To: Use ">" (greater than) and "<" (less than) symbols

How To: Do long division without a calculator

How To: Find the x & y intercepts of rational functions

How To: Learn Calculus in 20 minutes

How To: Find a number given Its percent

How To: Calculate the height and volume of a pyramid

Find the discriminant (DELTA): quadratic equation

How To: Simplify surds (improper square roots)

How To: Find Xbar with the Zscore formula

How To: Calculate percentage growth rates in calculus

How To: Solve nonlinear systems of equations by graphing

How To: Calculate the area of a parallelogram

How To: Convert between diameter and radius

How To: Find a missing coordinate given: coordinate & equation

How To: Find a missing side of a triangle, similar to another

How To: Find the opposite and absolute value of a number

How To: Determine if a point lies on a line in slope intercept
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