This test is to be written in the BSB Computer Lab. The duration of the test is 2 hours.

Any calculators and one sheet of notes (8.5" x 11", one side only) are permitted.
You may not consult any web pages or e-mail.

Use R to do your analyses and draw graphs. Your response to each question should be in the form of a report. Prepare the report in a word processor, integrating graphics and discussion. Print out and submit your report at the end of the test period. Only printed reports will be accepted. Electronic submissions will not be accepted.

Question 1

Do a graphical analysis of the following data from a study to determine the effect of different plate materials and ambient temperature on the effective life (in hours) of a storage battery. There were 3 replicates at each combination of material and temperature.

                               Ambient temperature
                              low           medium             high
Plate material  1   130,  74, 155     34,  80,  40     20,  82,  70
                2   150, 159, 188     25,  58,  70    136, 106, 122     

The file MaxYrPrecipToronto.xls contains the observed annual maximum precipitation (in millimeters) in Toronto for various durations (from 5 min. to 24 hours). Do an exploratory data analysis and explain what you can conclude.

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Statistics 3N03/3J04