Columbia University
Columbia University: Expected Value Pdf
A PDF explaining and giving examples to show how the expected value of a random variable indicates its weighted average.
Texas Instruments
Texas Instruments: Means & Variances of Random Variables
This set contains statistics questions regarding means and variances of random variables. The student calculates sums and differences of random variables based on their means and variances.
CK-12 Foundation
Ck 12: Statistics: Variance of a Data Set
[Free Registration/Login may be required to access all resource tools.] Covers the variance for a normally distributed random variable.
CK-12 Foundation
Ck 12: Statistics: Binomial Distributions
[Free Registration/Login may be required to access all resource tools.] Covers binomial distributions.
Annenberg Foundation
Annenberg Learner: Against All Odds: Random Variables
Video presentation on the probability of independent events, covering related topics: multiplication rule, random variable, and mean and standard deviation. [28:41]
CK-12 Foundation
Ck 12: Probability: Discrete Random Variables Grades 9 10
[Free Registration/Login may be required to access all resource tools.] Introduces discrete random variables.
Stefan Warner and Steven R. Costenoble
Finite Mathematics & Applied Calculus: Random Variables and Distributions
Students examine random variables and distributions. Topics explored are probability distributions, and discrete and continuous random variables. The tutorial investigates the statistics concepts through class notes and examples. Review...
Illustrative Mathematics
Illustrative Mathematics: Hss md.a.2
Three activities asking students to calculate the expected value of a random variable and interpret it as the mean of the probability distribution. Tasks include Bob's Bagel Shop, Fred's Fun Factory, and Sounds Really Good! (sort of).
CK-12 Foundation
Ck 12: Probability: Discrete Random Variables
[Free Registration/Login may be required to access all resource tools.] Introduces discrete random variables and how they are used to determine probability. Students will learn the definition of discrete random variables and how to make...
CK-12 Foundation
Ck 12: Statistics: Standard Deviation of a Data Set
[Free Registration/Login may be required to access all resource tools.] Learn about standard deviation of normally distributed data.
Hofstra University
Hofstra University: Review Exercises Random Variables..
Interactive review problems are offered to practice the concepts of random variables and statistics. Topics covered include, Bernoulli trials, normal and binomial distributions, Chebyshev's rule, and the like.
University of Glasgow
Steps Statistics Glossary: Random Variable
Describes random variable and briefly mentions the two types of random variables: discrete and continuous.
University of Glasgow
Steps Statistics Glossary: Discrete Random Variable
An overview of the term "discrete random variable." The site continues with the definition "continuous random variable" so that the user may compare the two.
University of Glasgow
University of Glasgow: Continuous Random Variable
An overview of the term "continuous random variable." The definition follows immediately after "discrete random variable" so that the user may compare the two.
California State University
Cal State San Bernardino: Intro to Probability Models
The concept of random variables comes to life with this Applet used to roll one, two, six, or nine dice. The user selects the number of rolls to be completed, and the program quickly counts and graphs the results.
Interactive Mathematics
Interactive Mathematics: Probability Distribution
The concept of random variables is the focus of this lesson, including definitions of discrete and continuous random variables. Discussions on discrete probability distribution and density function are included, along with expected value...