The Flinders University of South Australia School of Computer Science, Engineering and Mathematics
STAT2700 Applied Statistics Laboratory
Take-Home Test 1
Due 3pm, Thursday, 19th March, 2015

Submitting Your Test....
• Your submission must be your own independent work.
• Submission method for this Test is ON-LINE submission via FLO only. Hard copy submission or electronic submission via email will NOT be accepted.
• The Take-Home Test submission icon can be found in the top panel ( above Week 1) on FLO. Click on the icon and upload your assignment.
• Your submission should contain one (1) file in PDF format with size no bigger than 2 MB.
• You can update your submission for unlimited number of times before the due date.
• Refer to the “Statement of Assessment” pdf document on FLO regarding late assignment penalties.
• Medical extension or extension due to compassionate ground may be granted.
Only applications with legitimate reasons will be considered.

Writing Up Your Take-Home Test....
• Answer ALL questions in this Take-Home Test in the ORDER they appear. You are advised to start each question on a NEW PAGE.
• MS-WORD (or any other typesetting applications) can be used in preparing your Take-Home Test. Your submission MUST be in PDF format.
• INCLUDE relevant graphs, plots or tables in your answers.
• Graphs, plots and tables SHOULD be resized properly.
• A proper CAPTION must be included for every graph, plot or table. Units of measurements (if appropriate) and any other necessary details MUST also be included in the caption.

Question 1: Data Frame: Gift Boxes [5 Marks]
An online order of 12 small boxes of the same type was received. Upon delivery, the dimensions of the 12 boxes were measured by four students. The data are recorded in the below table. The measurements are in centimeter.
Small boxes
Name Width (cm) Length (cm) Height ( cm )
Ben box 1 3.61 5.30 1.63
box 2 3.52 5.31 1.58
box 3 3.53 5.31 1.63
Craig box 1 3.64 5.33 1.53
box 2 3.65 5.34 1.58
box 3 3.66 5.35 1.58
Kristy box 1 3.63 5.28 1.57
box 2 3.64 5.31 1.53
box 3 3.63 5.33 1.57
Molly box 1 3.60 5.31 1.48
box 2 3.61 5.28 1.46
box 3 3.55 5.26 1.42
Suppose we do not care about who made the measurements. Use EXCEL to construct a proper data frame that is ready to be import to “R”. (Hint: determine the number of subjects and the number of variables.)
Give your answer of the data frame by providing a screen-shot displaying the dataframe in ”R”. Instructions as follow. Import the data to “R”. Display the data frame in ”R” by clicking on the ”view data set” button. Then, use ’print-screen’ (found on your keyboard) to copy the screen with the the data set; control-V to paste it in MS Word; click on the picture, select ’crop’ from the ’format’ tab and crop the picture; press ’ESC’ when finish cropping; resize the picture appropriately.
Note: Your answer must include the entire dataframe. That is, all subjects and all variables must be shown in your answer. Use sensible names for the variables. See also ’Writing Up Your Assignment’ on the cover page.
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Question 2: Data Frame: Salinity Measurement [5 Marks]
A laboratory technician made up 3 batches of solution for salinity measurement. The 3 batches of solution are of different unknown concentration and are labelled with ’A’, ’B’ or ’C’. Five students took samples from each of the 3 batches and measured the salinity. The measurements (in gram per litre (g/l)) are recorded as follow.
Salinity
Name A B C
Salvo Montalbano 8.94 3.15 1.53
Sherlock Holmes 9.44 3.24 1.78
Snow White 9.44 3.16 1.56
Peter Pan 8.94 3.15 1.53
Mary Poppins 8.95 2.48 1.22
Suppose we do not care about who made the measurements. Use EXCEL to construct a proper data frame that is ready to be import to “R”. (Hint: determine the number of subjects and the number of variables.)
Give your answer of the data frame by providing a screen-shot displaying the dataframe in ”R”. Instructions as follow. Import the data to “R”. Display the data frame in ”R” by clicking on the ”view data set” button. Then, use ’print-screen’ (found on your keyboard) to copy the screen with the the data set; control-V to paste it in MS Word; click on the picture, select ’crop’ from the ’format’ tab and crop the picture; press ’ESC’ when finish cropping; resize the picture appropriately.
Note: Your answer must include the entire dataframe. That is, all subjects and all variables must be shown in your answer. Use sensible names for the variables. See also ’Writing Up Your Assignment’ on the cover page.
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