Psy 520 DB3.docx

# Psy 520 DB3.docx - Review the video"Linear Correlation in...

• bange14
• 4
• 100% (4) 4 out of 4 people found this document helpful

This preview shows 1 out of 2 pages.

Review the video "Linear Correlation" in the Calculations section of the "Statistics Visual Learner" media piece. It is sometimes said that the higher the correlation between two variables, the more likely the relationship is causal. Do you think this is correct? Discuss. Not always is it true that the higher the correlation between two variables, the more likely the relationship is casual. “Correlation is a statistical measure (expressed as a number) that describes the size and direction of a relationship between two or more variables” (Australian Bureau of Statistics, 2013). “Causation indicates that one event is the result of the occurrence of the other event; such as there being a causal relationship between the two events. This is also referred to as cause and effect” (2013). A central goal of most research is the identification of causal relationships, or demonstrating that a particular independent variable (the cause) has an effect on the dependent variable of interest (the effect). Even if the data has a correlation coefficient of +1 or -1, it is important to note that correlation still does not imply causality (2013). It is also important to note that the correlation coefficient only measures linear relationships. A meaningful nonlinear relationship may exist even if the correlation coefficient is 0 (2013). The given statement is incorrect because it can seem easy to uncover an underlying association between two factors but one must account for any external stimulus that may cause or influence the circumstances. The use of a controlled study is the most effective way of establishing causality between variables. “In a controlled study, the sample or population is split in two, with both groups being comparable in almost every way. The two groups then receive different treatments, and the outcomes of each group are assessed” (2013).

Subscribe to view the full document.

You've reached the end of this preview.
• Winter '17
• Dr. Baker
• Correlation, Angela, Causality, Correlation does not imply causation

{[ snackBarMessage ]}

### What students are saying

• As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

Kiran Temple University Fox School of Business ‘17, Course Hero Intern

• I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

Dana University of Pennsylvania ‘17, Course Hero Intern

• The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

Jill Tulane University ‘16, Course Hero Intern