Week13_Nov10_Regression_Answers

Week13_Nov10_Regression_Answers

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

View Full Document Right Arrow Icon
HP 1100 Tutorial for Week 13 Regression [Dataset] “Week13_Nov10_Regression.sav” 1. Regression 1) Scatter Plot : add the fit line 2) Identify the equation : bX a Y ˆ By hand: x SS SP b a Y b X = 5, = 3, SSX = 8, SSY = 32, SP = 11 X X Ȳ b = 11 8 = 1.375 a = 3 1.375 × 5 =− 3.875 ^ Y =− 3.875 + 1.375 X By SPSS: Analyze --> Regression --> Linear 3) Interpret the results : a: the Y-intercept, where the line crosses the Y-axis; a is the average of Y when X = 0. b: the slope, the direction and degree to which the line is tilted; on average speaking, when X changes by 1 unit, b is the amount of change in Y. R **Compare R with the correlation coefficient obtained from Pearson correlation.
Image of page 1

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

View Full Document Right Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.
  • Fall '16
  • cecilia
  • Statistics, Nov 10, Correlation and dependence, Pearson product-moment correlation coefficient, Spearman's rank correlation coefficient, Pearson correlation coefficient, 47.3%

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    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.

    Student Picture

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

  • Left Quote Icon

    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.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    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.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern