assignments
due Fri Feb 3
Assignment 1
From Collaborative Statistics: 1.12.4, 1.12.8, 1.12.10, 1.12.13, 1.12.17.
Give an examples of a type of data that could be collected from a sample of Marlboro students in each of the following three categories: qualitative, quantitative (discrete), quantitative (continuous).
Suppose that we're interested not in how good cookies are but in what numbers people use to rank them. Give a frequency table, including a relative frequency column, for the 65 numbers given by all of you to rate cookies.
due Fri Feb 17
Assignment 2
- From Collaborative Stats: Question 2.13.8 (without using any computer software, though a normal calculator or using a computer as a normal calculator is fine), Question 2.13.13 (Use R for this one).
- The file "feb17.csv" is available on the resources page (linked at the bottom there). It contains the data from three quizzes of stats classes at the colleges "Fake", "Bogus" and "Sham". (Yes, I made them up.) Using R, report numerical stats for the three colleges and draw a histogram for each. Compare the histograms and the numerical data (sentences such as "Sham has a higher median than mean; you can see this on the histogram because all of the bars are about the same height" or "The bars on the Bogus chart alternate in height but the Fake ones don't; this corresponds to the higher standard deviation of Bogus" except that your sentences should be correct.)
- The file "mathdata.xls" contains data about students at Marlboro and the extent to which they've taken math classes (note that there are two sheets in the file: my current method for getting data from a file like this into R in the format I want is to build a new spreadsheet and copy-paste what I want to where I want it). Draw some graphs. Describe what is going on. Discuss.
- Later note: math2.csv, also available on the resources page, has more data---it considers only the students that came to Marlboro as their first instance of higher ed and tracks in which semester those who graduated first took a math class (if they did). It also gives some summary stats on the number of math classes taken by each class. No need to look at this one if the original file is sufficiently amusing for you, but as I had more data I thought I'd pass it along.
- Even later note: there was an error while compiling the data mentioned in the previous note. Fixed now and the corrected file is available on the resources page as math2_corrected.csv. If you've already got stuck into the previous file and generated some graphs, that's fine: it's the drawing of graphs and the thinking about them that's most important. If you spotted what was wrong and decided to discuss that, even better. Otherwise, use the corrected file.
due Tue Feb 28
Quiz1
due Tue Mar 6
Group Presentation
due Fri Apr 6
Assignment 3
- From Collaborative Stats: 4.15.2, 4.15.6, 6.8.4, 6.8.10, 7.7.2.
- From On Uncertainty: Exercises 2, 3 and 4 from Section 3 (on page 11).
due Thu Apr 26
Quiz 2
due Tue May 1
Individual Presentation
due Sat May 5
Final Assignment
From Collaborative Stats: 8.9.4, 8.9.12, 9.16.4, 10.9.14 (do complete test and analysis), 11.11.12, 12.13.14, 13.8.2.
due Mon May 7
Final Exam
