Lab#3-in-class -RIGHT-solution.docx - Stat252 winter2019 Lab#3 in class Friday Feb 1st 2019 1 Lab#4(in class – Friday February 1st 2019 Example#1

# Lab#3-in-class -RIGHT-solution.docx - Stat252 winter2019...

• Lab Report
• 5

This preview shows page 1 - 2 out of 5 pages.

Stat252 winter2019 Lab#3 in class- Friday, Feb 1 st , 2019 1 Lab #4 (in class) – Friday, February 1 st , 2019. Example #1: Predicting the heights of the criminal from the footprints. Can a footprint taken at the scene of a crime help to determine the height of the criminal? In other words, is there an association between height and foot length? A sample of 3 3 students measured their height (in inches) and their foot length (in centimeters). (Whenever you use JMP, cut and paste the appropriate output) Dataset “Lab#3-height-shoe-cm” 1) Using data “ Lab#3 – Height_Shoe” create a scatterplot of “How tall” vs. “Shoe-Cm” variables. Comment on whether these two variables appear to be associated. Positive strong linear relationship between height and shoe size 2) Report the correlation coefficient, r , between “How Tall” (later I will call this variable as “Height”) and Shoe Size – CM ( just “Shoe size”). r=0.859 3) Use JMP to determine the regression equation for predicting height from shoe size. Plot this line on a scatterplot (and submit). Record this equation. Interpret the slope of this equation. For every 1 cm increase in shoe size, height of the person will increase on average 2.05 inches 4) Report the value of r 2 and interpret it in the context of the problem. How to compute : r 2 r=.859 r 2 =(.859)^2=.737 How to compute : r 2 r 2 = SSR/SST= 436.26/591.87 =.737 How to interpret r 2 r 2 means that 73.7 % of the observed variability in people’s height ( Y) can be explained by an approximate linear relationship between height ( Y) and foot size (X) .

Subscribe to view the full document.

• Winter '05
• staff

### 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

Ask Expert Tutors You can ask 0 bonus questions You can ask 0 questions (0 expire soon) You can ask 0 questions (will expire )
Answers in as fast as 15 minutes