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Random variables and probability distributions : Expected Value: E(X)

By: Sal Khan

Expected value of a random variable

Random variables. Expected value. Probability distributions (both discrete and continuous). Binomial distribution. Poisson processes.

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Poisson process : Poisson Process 1

By: Sal Khan

Introduction to Poisson Processes and the Poisson Distribution.

Random variables. Expected value. Probability distributions (both discrete and continuous). Binomial distribution. Poisson processes.

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Binomial distribution : Binomial Distribution 3

By: Sal Khan

Basketball binomial distribution

Random variables. Expected value. Probability distributions (both discrete and continuous). Binomial distribution. Poisson processes.

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Random variables and probability distributions : Random Variables

By: Sal Khan

Basic idea and definitions of random variables

Random variables. Expected value. Probability distributions (both discrete and continuous). Binomial distribution. Poisson processes.

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Binomial distribution : Binomial Distribution 2

By: Sal Khan

More on the binomial distribution

Random variables. Expected value. Probability distributions (both discrete and continuous). Binomial distribution. Poisson processes.

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Random variables and probability distributions : Probability Densi...

By: Sal Khan

Probability density functions for continuous random variables.

Random variables. Expected value. Probability distributions (both discrete and continuous). Binomial distribution. Poisson processes.

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Binomial distribution : Binomial Distribution 4

By: Sal Khan

Using Excel to visualize the basketball binomial distribution

Random variables. Expected value. Probability distributions (both discrete and continuous). Binomial distribution. Poisson processes.

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Binomial distribution : Binomial Distribution 1

By: Sal Khan

Introduction to the binomial distribution

Random variables. Expected value. Probability distributions (both discrete and continuous). Binomial distribution. Poisson processes.

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Random variables and probability distributions : Discrete and cont...

By: Sal Khan

Defining discrete and continuous random variables. Working through examples of both discrete and continuous random variables.

Random variables. Expected value. Probability distributions (both discrete and continuous). Binomial distribution. Poisson processes.

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Binomial distribution : Expected Value of Binomial Distribution

By: Sal Khan

Expected value of a binomial distributed random variable

Random variables. Expected value. Probability distributions (both discrete and continuous). Binomial distribution. Poisson processes.

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Poisson process : Poisson Process 2

By: Sal Khan

More of the derivation of the Poisson Distribution.

Random variables. Expected value. Probability distributions (both discrete and continuous). Binomial distribution. Poisson processes.

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Linear regression and correlation : Second Regression Example

By: Sal Khan

Second Regression Example

Fitting a line to points. Linear regression. R-squared.

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Sal's old statistics videos : Statistics: Variance of a Population

By: Sal Khan

Variance of a population.

Measures of central tendency and dispersion. Mean, median, mode, variance, and standard deviation.

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Variance and standard deviation : Statistics: Standard Deviation

By: Sal Khan

Review of what we've learned. Introduction to the standard deviation.

Measures of central tendency and dispersion. Mean, median, mode, variance, and standard deviation.

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Variance and standard deviation : Another simulation giving eviden...

By: Sal Khan

Another visualization providing evidence that dividing by n-1 truly gives an unbiased estimate of population variance.

Measures of central tendency and dispersion. Mean, median, mode, variance, and standard deviation.

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Linear regression and correlation : Proof (Part 3) Minimizing Squa...

By: Sal Khan

Proof (Part 3) Minimizing Squared Error to Regression Line

Fitting a line to points. Linear regression. R-squared.

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Brain Teasers : Blue Forehead Room Brain Teaser

By: Sal Khan

What happens when 100 perfect logicians have to figure out if they each have a blue forehead?

Random logic puzzles and brain teasers. Fun to do and useful for many job interviews!

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Brain Teasers : Light Bulb Switching Brain Teaser

By: Sal Khan

Turning light bulbs on and off.

Random logic puzzles and brain teasers. Fun to do and useful for many job interviews!

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Measures of central tendency : Statistics intro: mean, median and mode

By: Sal Khan

Using the mean, median and mode to try to represent data

Measures of central tendency and dispersion. Mean, median, mode, variance, and standard deviation.

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Box-and-whisker plots : Example: Range and mid-range

By: Sal Khan, Monterey Institute for Technology and Education

Range and Mid-range

Measures of central tendency and dispersion. Mean, median, mode, variance, and standard deviation.

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