Data assignment unit 4.docx - Correlation Between Students...

  • No School
  • AA 1
  • 3

This preview shows page 1 - 3 out of 3 pages.

Image of page 1

Subscribe to view the full document.

2. a) 5.5 6 6.5 7 7.5 8 8.5 9 9.5 0 10 20 30 40 50 60 70 80 90 Correlation Between Students Marks and hours of sleep Hours of Sleep Average Marks b) PPMCC = 0.762294 c) I would conclude that the relationship between hours of sleep and a student’s average mark is a strong positive linear correlation. This is because the PPMC is close to 1, indicating that the correlation between the variables is strong. It can also be proved by looking at the graph, which shows that the average mark of a student increases as they get more sleep. The graph has a positive trend, with no visible outliers. 3. One reason that the conclusion deducted from the graph may be inaccurate is because it is very cut and dry; meaning that it is a simple cause and effect conclusion. Gauntlet concluding that piracy does not harm music sales may not be correct since there could be other factors that explain this that go beyond the surface of what the data presents. For example, the people that were surveyed may have all downloaded music from certain select websites that offer low quality versions of songs, consequently making the users want to buy the songs instead. They may have excluded data from users that
Image of page 2
Image of page 3
  • Fall '19
  • researcher, Causality, Correlation and dependence

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

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