Cheg 258 - Lecture Notes - Feb. 18, 2000

Announcements

Class notes

The main points of the lecture were

• Error Propagation

Goals:

• Calculate the sample variance of N observations.
• Determine the error in a linear combination of variables.

Reading

• The class notes.

Questions of the Day:

• What is the physical basis for using (N-1) rather than N in determining the sample variance?
• If two variables are have positive covariance, does the covariance increase or decrease the variance of the difference between them?

Matlab Example Codes

example 14