{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Stats Q 1 sheet - P opulation A set of existing...

Info icon This preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
Population : A set of existing units (people, objects or events) Variable : Any characteristic of the population Census : An examination all of the population of measurements Sample : A subset of the units of a population Quantitative Versus Qualitative Quantitative : Measurements that represent quantities (Annual starting salary, Gasoline mileage) Qualitative : A descriptive category to which a population unit belongs: a descriptive attribute of a population unit (A person’s gender is qualitative, Make of automobile) Population of Measurements Measurement of the variable of interest for each and every population unit Sometimes referred to as an observation (For example, annual starting salaries of all graduates from last year’s MBA program) Census : The process of collecting the population of all measurements Sample : A subset of population units Descriptive Statistics Descriptive Statistics : The science of describing the important aspects of a set of measurements Statistical Inference : is the science of using a sample of measurements to make generalizations about the important aspects of a population of measurements. Random Sample : Selected so that, on each selection from the population, every unit remaining in the population on that selection has the same chance of being chosen Sample with replacement- units can be picked more than once Sample without replacement – each units is picked and withheld – cant be picked more than once- customary sampling method. Approximately Random Samples
Image of page 1
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