Homework 2
				
				
				
				
				Problem 2.1: Use the 
				University of Queensland Vital Signs Dataset data
				to do some QC charts and vital sign monitoring for several patients 
				(e.g., cases 1, 3, 4). 
				
Some cases are available here.
				Filenames “UQ_VitalSignsData_Case0#.csv” (where “#” is a number indexing the case).
				
 - Generate some (clinically relevant) plots of the data.
- Use Control Charts to identify possible critical time-points (events).
 Note: 
VitalData <- read.csv('https://umich.instructure.com/files/366336/download?download_frd=1&verifier=XZRIUqueEIjlEguozas4VKggENrD0FlOsbncWhx0',as.is=T, header=T)
				
				
				
 
				
				Problem 2.2: Fit in a mixed effects model to the 
				lung cancer data.
				Determine several covariates of clinical interest and interpret your findings in 
				terms of the specific measures/results.