Project #1 - Christian Kurz Statistics Luke Dowell Project...

Info icon This preview shows pages 1–3. Sign up to view the full content.

Christian Kurz Statistics Luke Dowell 2/8/16 Project 1 In this project we are interpreting data from Seward County Community College and Area Technical School. The data consist of scores from all students who took the CAAP Critical Thinking Assessment at Seward County Community College from 2002-2011. Looking at the data on an excel sheet we cannot assume or gather any understanding of it unless we evaluate it closely. First we created a frequency distribution, which is a mathematical table showing the number of instances in which a variable takes each of its possible values, to show the basic shape of our data. Creating the frequency distribution of the test scores it was found that the distribution of the data is skewed to the left. Skewed to the left simply means that the mean of the data is considerably closer to the maximum value of the data as shown below. We also know just by looking at the table that it is skewed to the left because if I were to draw an estimation curve on the data, the left side would have a longer tail, which means in statistics that it is “skewed to the left.” 0 200 400 600 800 1000 1200 1400 TEST SCORES FREQUENCY SCORES Score Frequency 0-10 1 11-20 0 21-30 0 31-40 0 41-50 39 51-60 1212 61-70 856 71-80 42
Image of page 1

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

The graph and frequency table shows us that the mean of the data is in the 51-60 category because most values are in that category, and also that there is an outlier which is a value that is far away from all other values in the 0-10 score category. The next step we took to evaluate this data was taking the mean score from each year and creating a time series plot to show trends in data over time. The graph below has a very steady trend. The scores from 2002-2011 were at a steady output,
Image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

{[ 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