Khan Academy: Calculating Sum of Squares Within and Between

Video demonstrates how to calculate the sum of squares within and the sum of squares between. Discusses the relationship between the sum of squares within, the sum of squares between and the total sum of squares and the relationship...

Analysis of Variance 2 - Calculating SSW and SSB (Total Sum of Squares Within and Between).

Video demonstrates how to calculate the total sum of squares and uses the degrees of freedom to calculate variance. [7:39]

Demonstrates how to complete the square for the general form of a quadratic equation, ax^2 + bx + c = 0, which results in the quadratic formula. [9:31]

Video gives an example of the step by step process of using a Pearson's chi-square test to accept or reject a hypothesized data distribution. [11:48]

Demonstrates how to use the completing the square method to identify a constant value for a given trinomial to create a perfect square trinomial. Practice problems available. [3:22]

Explains how to use the completing the square method to determine what constant value can be added to a given polynomial to create a perfect square trinomial. [3:28]

Demonstrates how to solve two different quadratic equations by completing the square. Practice problems available. [13:45]

A video showing how to find the area under a curve using Riemann Sum.

Video giving an overview of the square root sign. Positive values are then chosen to evaluate the basic quadratic and square root functions, the points are graphed, and the graphs are compared. Graphs are also created with an online...