STA101 Introduction to Statistics Assignment 4

Tags: adult height, Wadsworth Cengage Learning, Greg Mankiw, Universitat Pompeu Fabra, Edoardo Fencho Camille, Eastern Economic Journal, Hodges Harbrace Handbook, Europe, L Gray, Economical Writing, Barcelona, Quintana-Domeque, women, Laetitia Konga, group members, homework assignments, STA101 Introduction to Statistics, working paper, TI-84, Due date, APA Style, Charles Julia Jonathan Julien, References Bullock, points, point, data distribution
Content: STA101 Introduction to Statistics Assignment 2 Luc Hens October 2, 2017 1 Due date Due on Friday 6 October 2017 [postponed to Wednesday 18 October 2017] at the beginning of class. Start in time. If you run into trouble, ask me for help (that's what Office Hours are for). 2 Objectives The objectives of this assignment are: ­ to let you locate an article in a scholarly journal via the library web site; ­ to let you use the normal approximation to make statements about a data set for which you know only that it has a bell-shaped distribution and a given average and standard deviation; ­ to let you use the TI-84 calculator to compute normal approximations to a data distribution; ­ to let you practice writing a clear and concise report describing your sources, the data manipulations you performed, and the results you obtained. 3 Details You can do the homework assignments individually or (preferably) in groups of two. If you work in group, both group members should contribute equally to each of the assignments. Both group members should carefully proofread the paper before its is submitted, and both group members are responsible for the quality of the entire paper. If you have problems co-operating with your partner, let me know immediately. Start by reading: ­ Chapter 5 from Freedman et al. (2007); ­ the section on APA Style from the textbook from your Critical Think- ing and Academic Writing courses (Bullock et al., 2014, pp. 158­191). Alternatively, you can use Kirszner and Mandell (2011, chapter 35, pp. 236­263) or Glenn et al. (2004, pp. 652­679); 1
­ the rules for written work ( work.html);
­ my document on how to typeset math with a word processor (http://; ­ McCloskey on writing well (McCloskey, 1999) (;
­ Mankiw on writing well (Mankiw, 2006), (http://gregmankiw.blogspot. be/2006/10/how-to-write-well.html);
Download the pdf and the Microsoft Word-formatted (.doc) files with an example of how the paper should be formatted: Use the Microsoft Word-formatted (.doc) file as a template, that is: save the file as STA101-assignment-2.doc, and write your text over the existing text using your favorite word processor. These are the countries by group:
Marvin Alicia, Alfred Emilie, Dea Jeroen, Brandon Jennifer, Edoardo Fencho Camille, Biram Alexander, Louis-Alexandre Sґebastien Claudia, Laetitia Konga, Charles Julia Jonathan Julien, Harold Diego Max Arnold
Austria Belgium Denmark Finland Greece Ireland Italy Portugal Spain Sweden Austria Belgium Denmark Finland Greece Ireland Italy
women born in 1952 women born in 1954 women born in 1956 women born in 1960 women born in 1964 women born in 1968 women born in 1972 women born in 1952 women born in 1956 women born in 1960 women born in 1964 women born in 1968 women born in 1972 women born in 1976 women born in 1980 women born in 1972 women born in 1976
If you change groups, make sure no two groups use the same country, gender, and year. The data sources are Garcia and Quintana-Domeque (2007a) and Garcia and Quintana-Domeque (2007b). The descriptive statistics you need are in the appendices. Locate Garcia and Quintana-Domeque (2007a) by going to the VUB library web site: Follow the links: Journal articles VUB ejournals: search via catalogue. Enter the journal title in the search window. In the search results follow the link to the electronic version of the journal. A new window opens for the electronic version of the
journal: Browse to the appropriate issue and download the pdf version of the paper. Locate Garcia and Quintana-Domeque (2007b) (a Working Paper) by going to and search by author (the site is in Spanish or Catalan but finding your way is straightforward). Download the paper. Once you have the two papers, record the average, standard deviation, and Sample size for the heights of men or women born in the country and year assigned to you. Sketch (by hand, using a pencil and a ruler with a centimeter scale for the horizontal axis) the distribution of the data in your sample, assuming that the heights follow a bell-shaped distribution. Then sketch the distribution of the standardized data. Now use the normal approximation and your TI-84 to estimate which percentage of men or women in the sample are taller than 180 cm. Show your work: instance, carefully explain and show how you obtained the standardized value of 180 cm; report which TI-84 function you used to find the result. Illustrate the result in the sketches. Then convert the percentage you obtained to a count: approximately how many men or women in the sample are taller than 180 cm? Explain and show tour work. Then estimate the 75th percentile (the third quartile) of the sample, and briefly explain. Again, explain and show your work. Illustrate in two sketches: one of the data distribution and one of the standardized distribution. Report which TI-84 function you used. Write everything up in a polished paper. The paper should include the handdrawn sketches with the relevant areas shaded; don't number the sketches as figures but include them in the text in the same way as Freedman et al. (2007, pp. 82­85) do. 4 Structure and format of the paper You paper should in APA Style and be organized as follows: ­ A title page (page 1). The title of your paper will be: Assignment 1: The distribution of the heights of men [women] in [country] born in [year] ­ An abstract that summarizes the paper in maximum 100 words (page 2) (for this short paper 30 words will easily do); ­ Repeat the title of page 1, and write an introduction that briefly describes the data (what? who? when?) and documents the data source(s) using the APA-style parenthetical author-date format. In APA Style the introduction has no header. Include the corresponding bibliographical reference(s) in the references at the end of the paper). ­ The next two paragraphs explain and show the work (see above for details). This short paper needs no conclusions. ­ The references are at the end of the paper and should minimally contain Freedman et al. (2007) (that you should cite in the paper) and your data sources. Staple all pages together. 3
5 Rubric These are the criteria for grading this assignment: Formatting (2 points) Does the paper respect APA Style (double spaced, paragraphs indented, title repeated when main text starts, pages numbered on top right, equations indented, etc.)? Does the physical presentation indicate care in preparation and respect for the reader's specifications (A4 paper, stapled in the top left corner, general neatness etc.)? Grammar, style, and spelling (1 point) Are grammar and spelling correct? Was the paper carefully proofread? Does the narrative flow well, develop logically? Are introductions, transitions, subconclusions, conclusions convincing? Structure (1 point) Does the structure do justice to the exigencies of the topic? Is the paper organized into coherent subsections which, when integrated, form a logical sequence of arguments leading directly to the conclusions? Documentation, Scientific Format (1 point) Is documentation extensive enough for a paper of this level? Does it consistently follow APA Style? Are there anomalies such as unnecessary second-hand quotations or imprecise references? Is the data source carefully documented? Contents (15 points) ­ Does the abstract summarize the main points of the paper? (1 point) ­ Do the authors in the introduction explain why the problem is relevant? Justify the method used and explain the underlying assumption(s)? Report the data sources? (1 point) ­ Do the authors clearly explain how they obtained their results? Do they show their work and illustrate using sketches? Do they obtain the correct results? (13 points) References Bullock, R., Brody, M., and Weinberg, F. (2014). The Little Seagull Handbook. W.W. Norton & Company, New York and London, 2nd edition. Freedman, D., Pisani, R., and Purves, R. (2007). Statistics. Norton, New York and London, 4th edition. Garcia, J. and Quintana-Domeque, C. (2007a). The evolution of adult height in Europe: A brief note. Economics and Human Biology, 5(2):340­349. 4
Garcia, J. and Quintana-Domeque, C. (2007b). The evolution of adult height in Europe: A brief note. Departament di Economia i Empresa, Universitat Pompeu Fabra, Barcelona: Working Paper 1002. Retrieved from Glenn, C., Miller, R., Webb, S. S., L Gray, L., and Hodges, J. (2004). The Hodges Harbrace Handbook. Thomson, Boston, 15th edition. Kirszner, L. G. and Mandell, S. R. (2011). The Pocket Wadsworth Handbook. Wadsworth Cengage Learning, Boston, 5th edition. Mankiw, N. G. (2006). How to write well. Greg Mankiw's Blog, 7 October 2006. McCloskey, D. N. (1999). Economical Writing: An Executive summary. Eastern Economic Journal, 25(2):239­242. 5

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