Stat-Assignments.docx - Note Assignment one Assignment two...

This preview shows page 1 - 3 out of 6 pages.

Note: Assignment one, Assignment two, Assignment three, and Assignment four Each is 20 total 100 Assignment One Instructions This quiz will cover the material from Chapters 1–5 (Modules One, Two, and Three) in Basic Biostatistics: Statistics for Public Health Practice . The quiz will focus on solving and analyzing problems. Answer the following questions covering materials from previous chapters in your textbook. Each question is worth 3.5 points. 1. Prospective studies on nutrition often require subjects to keep detailed daily dietary logs. In contrast, retrospective studies often rely on recall. Which method (dietary logs or retrospective recall) do you believe is more likely to achieve accurate results? Explain your response. 2. We often have a choice of whether to record a given variable on either a quantitative or a categorical scale. How does one measure age quantitatively? Provide an example by which age can be measured categorically. 3. Telephone surveys may use a telephone directory to identify individuals for study. Speculate on the type of household that would be undercovered by using this sampling frame. 4. Could the number “0000” appear in a table of random digits? If so, how likely is this? 5. Body weights of 18 diabetics expressed as a percentage of ideal (defined as body weight divided by ideal body weight x 100) are listed: {107, 119, 99, 114, 120, 104, 88, 114, 124, 116, 101, 121, 152, 100, 125, 114, 95, 117}. Construct a stem-and-leaf plot of these data and interpret your findings. 6. Name three measures of central location. 7. To assess the air quality in a surgical suite, the presence of colony-forming spores per cubic meter of air is measured on three successive days. The results are as follows: {12, 24, 30}. Calculate the mean and standard deviation for these data. 8. In a lottery game, a person must select 5 numbers from a total of 40. Tracy has chosen 7, 8, 9, 10, 11. Jaime has chosen 39, 17, 37, 5, 28. Who has a greater chance of winning?
Image of page 1

Subscribe to view the full document.

9. In a box, there are 8 orange, 7 blue, and 6 red balls. One ball is selected randomly. What is the probability that it is neither orange nor red? 10. A __________ is a numerical quantity that takes on different values depending on chance. There are two types of random variables. __________ form a countable set of possible values. __________ form an unbroken continuum of possible values. Assignment Two Instructions This quiz will cover material from Chapters 6–9 (Modules Three and Four) in Basic Biostatistics: Statistics for Public Health Practice .
Image of page 2
Image of page 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