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This page provides a list of educational videos related to Variablity. You can also use this page to find sample questions, apps, worksheets, lessons , infographics and presentations related to Variablity.

Graphing - Independent Dependent Variables

By MrG Lewis

Learn how to graph independent and dependent variables in this video from Mr G Lewis

Linear Equations in Two Variables

By Meritnation

YouTube presents Linear Equations in Two Variables, an educational video resource on math.

Expressions with unknown variables 2

By Khan Academy

A few more examples where Sal evaluates expressions with multiple unknown variables.

Examples: Writing Variable Expressions

By Mathispower4u

Practicing variable expressions with this tutorial video.

Introduction to Random Variables - Khan Academy

This video lecture series from Khan Academy on Probability includes Introduction to Probability, Permutations, Combinations, Probability using Combinations, Conditional probability, Introduction to Random Variables, Probability Density Functions, Binomial Distribution, Expected Value, Expected value of Binomial Distribution, Poisson Process, Law of Large Numbers

2.3 Quadratic Equations in One Variable Part 1

By Tammy B

Solve quadratic equations in one variable.

Evaluating Expressions with Two Variables - Khan Academy

By Khan Academy

Sal Khan shows the viewer how to evaluate an expression with two variables.

Example 6: Subtracting polynomials with two variables | Algebra I | Khan Academy

By Khan Academy

Example 6: Subtracting polynomials with two variables | Algebra I | Khan Academy

Expressions with unknown variables

By Khan Academy

Sal solved a few examples where we need to evaluate an expression, but we don't know the individual variable values.

Solving Quadratic Equations in one Variable by Factoring

By Victoriamiles

Solve quadratic equations in one variable.

Independent and Dependent Variables - YourTeacher.com

By yourteachermathhelp

This video briefly explains the difference between an independent and dependent variable using the example of the length of your hair based on how many days it has been since you got a hair cut.

Evaluating expressions with variables word problems

By Khan Academy

Learn how to evaluate an expression with variables using a technique called substitution (or plugging in).

Ch02_01 Linear Equations in One Variable CBSE MATHS

By Online Pathshala

Linear Equations in one variable

Mean and Expected Value of Discrete Random Variables

By statslectures

This video summarizes for us in less than two minutes how to find the expected value for a discrete random variable. In order to apply this to empirical data, form a histogram from your data and use that to determine relative frequencies.

Discrete and continuous random variables | Probability and Statistics | Khan Academy

By Khan Academy

Sal Khan continues to define discrete and continuous random variables while working through examples of both discrete and continuous random variables.

Exponents: Multiplying Variables with Rational Exponents – Basic Ex 2

By PatrickJMT

Exponents: Multiplying Variables with Rational Exponents – Basic Ex 2

Simplifying Radicals With Variables, Exponents, Fractions, Cube Roots - Algebra

By The Organic Chemistry Tutor

This algebra 1 & 2 video tutorial shows you how to simplify radicals with variables, fractions, and exponents that contains both square roots, cube roots, and variables such as x, y, and z. This video contains plenty of examples and practice problems.Here is a list of topics: 1. Simplifying Radical Expressions With Variables & Exponents 2. Simplifying Radicals With Fractions & Variables 3. Radicals With Square Roots & Cube Roots 4. Radical Expressions with X, Y, and Z 5. Absolute Value - Simplifying radical expressions

Mean E(X) and Variance Var(X) for Continuous Random Variables : ExamSolutions

By ExamSolutions

If we took the same approach to finding the expected value for a continuous random variable as we took for a discrete random variable, we would have to sum up an infinite number of terms. Fortunately, we have the field of calculus to help us with what would otherwise be an insurmountable task. This video shows us how we can use integrals to find the expected value of a continuous random variable. This video also goes over finding the variance of a continuous random variable, which requires the use of the expected value itself. The basic skill set is the same, though, so it might be valuable to watch as well.