{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

# Quiz_4_ - what kind of correlation should we expect between...

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

QUIZ #4  Spring 2001  SI NAME__________________________                    # 1. Calculate the Pearson r for the following set of data: X Y 7 20 5 12 4 14 4 11 3 10 2 14 N =  _____ SSx =  ______ SSY =  ______ r =  ______ 2. If the correlation between Hours Spent Studying statistics in a semester correlates . 70 with Final Course Grade in statistics, what percent of the variability in final grades is accounted for by the number of hours spent studying statistics ? 3. A correlation has two qualities. They are _______________ and ________________ 4. Professor Smith measures the weight(X) and the tempers(Y) of a large group of subjects. He constructs a scatter plot which reveals a circular scatter of points with no particular slope. This means that 5. Thinking about restricted range,

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: what kind of correlation should we expect between height and weight among the members of a professional male basketball team if they are all tall (77 to 81 inches)? a. a strong positive correlation b. a weak positive correlation c. a weak negative correlation d. a strong negative correlation 6. Why is it always a good idea to look at the scatter plot prior to calculating a Pearson's correlation ? a. to see if there is a strong relationship between the variables b. to see if the relationship is linear c. to see if there are unusual cases that have too much influence d. to see if the slope is positive or negative e both a and d f. both b and c 7. Which of the following is the strongest correlation ? a. +0.2 b.- 0.30 c. 0.0 d. +0.4 e- 0.5 8. If you want to look for a relationship between students' class rank and their performances on a national standardized test, which is the best coefficient to use? a. Pearson b. Spearman c. phi d. biserial...
View Full Document

• Spring '08
• Winters
• Psychology, Correlation and dependence, Pearson product-moment correlation coefficient, Spearman's rank correlation coefficient, weak negative correlation, strong negative correlation, weak positive correlation

{[ 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