STATS 779
STATISTICS
Professional Skills for Statisticians
FIRST SEMESTER, 2021
1. (18 marks total) Consider the rendered .pdf document (left-hand side), and the contents of the .tex file (right-hand side) used to typeset it, shown on page 3. The .tex file, as shown, is missing some of the ETEX code that was used to produce the .pdf document. Complete the .tex file by responding to the following items.
a) Which line of code must be modified in order for the font size of the entire document to be set at 11pt. Write down the modified part of the code only. (3 marks)
(b) Write down the command(s) which renders the title, author and date shown at the top of the .pdf document. On which line of the .tex file will you insert this command so that it compiles without error? (2 marks)
(c) Lines 12 and 22 of the .tex document contain the text First sect ion and Last section. Write down the TtX command which will enable each of these to he rendered as numbered section headings as per the .pdf document. (1 mark)
(d) The first sentence of section 2 refers to section 1. Write down the TEX command(s) needed to perform. this cross-referencing. Clearly state the line number(s) of the .tex file which must be modified. (4 marks)
(e) The references listed at the bottom of the .pdf document are stored in a plain text database file named article.bib. They were rendered with BiBTEX using the plain bibliography style. Write down the command(s) which must be added to the .tex file in order to produce the rendered list of references. Specify the line number(s) of the tex document in which you will insert command(s). (4 marks)
(f) Complete the following entry from the article.bib database so that it reproduces the book by Goossens et al. in the list of references. Specify only the code that must be added to this entry and the line numbers where the code will be inserted. Do not re-write the entire entry. (4 marks)
1 {
2 author = ,
3 title = ,
4 year = "1993",
5 publisher = "Addison-Wesley",
6 address = "Reading, Massachusetts"
7 }
2. (15 marks total) Write the ETEX code which reproduces exactly the following excerpt from a student project describing a simple linear regression model. Use the \boldsymbol control sequence to typeset bold Greek letters.
Letting y = (y1,32,...,yn)' denote an n x 1 vector of measured responses, the matrix form. of the simple linear regression model may be written as
(1)
where the n × 2 design matrix is defined as
is the vector of parameters and is an n × 1 vector of error terms. It follows from equation (1) that the equation for the ith observation is
3. (10 marks total) Write the complete WTEX code to reproduce the slide given in Figure 1.
Figure 1: A beamer slide.
4. (10 marks total)
(a) Briefly explain the function of each line in the following code chunk. (6 marks)
1 <<setup>> =
2 knitr::opts_chunk$set (
3 echo = FALSE, results = 'hide', fig.width = 4, fig.height = 2.5
4 @
(b) Write down the code chunk option, and its value, which has the equivalent effect of specifying both echo = FALSE and results='hide' in the code chunk in question 4a. (2 marks)
(c) Write down the code chunk option, and its value, which have the equivalent effect of specifying both echo = FALSE and results = 'hide' in the code chunk in question 4a. (2 marks)