Week 3

 Question 1:

Let's discuss the difference between positive association and negative association when describing the relationship between two variables. What do we mean by the least-square criterion? Give a general description of how the least-square criterion is involve in the construction of the least-square line.  Why do we say the least-squares line is the “best-fitting” line for the data set?  

Use the Internet and find a magazine or journal article in your field of major interest wherein the content of this chapter (Correlation and Regression – chapter 6) could be applied.  List the variables used, method of data collection, and the general type of information and conclusion drawn.

Note: Your initial post will be your answer to the Question and is to be 600 words with at least two references. Initial post will be graded on length, content, grammar and use of references. References should always be below each question as they are a different topic and not related in any way.

References: 

Exploring Statistics: Tales of Distributions by Chris Spatz