Khan Academy: Relative Complement or Difference Between Sets

Sal shows an example finding the relative complement or difference of two sets A and B.

Video first graphs the transformation image of a specific transformation. Then examines the solution set for a couple particular points in the image. Shows that the solution set is a shifted version of the null space. [16:34]

Video showing how to add and subtract numbers using significant figures. Contrasts adding and subtracting with significant figures with multiplying and dividing. [8:59]

As related to cryptography, understanding the concept of modular addition and modular subtraction and finding the proof.

Hypothesis Test for Difference of Means.

A video showing working with sets.

Video discusses the importance of the normal distribution and gives its formula with examples of how it is used. Connects to the central limit theorem. Manipulates the normal distribution formula to show different forms of it. Uses Excel...

Video explains random variables, gives examples of what they are used for and explains the difference from traditional variables. Explains the difference between discrete and continuous random variables. Gives examples of using a random...

A continuation of the video Introduction to Interest also from the Khan Academy. This segment develops formulas for both simple and compound interest using the variables P, r and t. After each of the formulas are derived, they are used...

Video gives an explanation of the difference between using z-statistics and t-statistics and when each should be used. [6:39]