{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

11.16

# 11.16 - o See if the items can reliably go together(run a...

This preview shows pages 1–2. Sign up to view the full content.

Correlations Correlation is the linear relationship between two numeric variables o Positive correlation when one thing goes up, the other goes up o Negative correlations when one thing goes up, the other goes down Range -1 (neg rel) through +1 (pos rel) Strength of relations, r= __ o .0-.2 = weak, no relationship o .2-.4 = weak relationship o .4-.6 = moderate relationship o .6-.8 = strong relationship o .8-1 = very strong relationship P value must be significant Correlation is NOT causation Analyze > correlate > bivariate ONLY WORKS WITH ORDINAL, RATIO or INTERVAL VARIABLES Computing an Index Variables must be numeric (nominal) Transform > compute Target variable – give name, give label Move over variable from left Put a + in between variables o Ex. Society1+society2+society3 Move over variable Press okay New computed variable is at the end In class example: credibility The purpose of an index is to organize data in a meaningful way When you run an index: o Look at what people have done historically

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: o See if the items can reliably go together (run a cronbach’s alpha test) o If they do go together, create the index TEST • P-value = Sig. (2-tailed) must be smaller than .05 to be significant • R-value = Pearson Correlation must be larger than .3 to be significant • Nova – • T-test – • Frequencies – include mean and SD • Chi-square – • Correlations – • Factor analysis – • Cronbach’s alpha – know how to read how scores will change if items are deleted, alpha must be greater than .7 PAPER • Include the strength of relationship in correlations • EC – 1 point on paper grade if we write a press release about research project findings due on the 4 th o “researchers at UGA found…” primary story o “undergraduate students did original research” secondary story o 1-2 quotes from us, possibly a quote from Dr. Sweetser o 2 page max; examples on De.li.cious page...
View Full Document

• Fall '09
• Sweetser
• Statistics, Correlation and dependence, Pearson product-moment correlation coefficient, Spearman's rank correlation coefficient, strong relationship, research project findings

{[ 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