Admin:
  1) Up-to-date syllabus on website (link in blackboard)
  2) Lab 1 due next week.
    - Format not critical (for first lab).
	- Include all measurements somewhere.
	- Repeated (>5) measurements in separate file (xls,mat,m,txt,json,xml,...).
    - Final measurements with errors in standard form in pdf.
    - Images in pdf or as separate file.
    - Graphs in pdf. 	
  3) Probably only 6 labs.  12 point for free.
  
Review:  
  1) Error <=> Uncertainty
    - Unavoidable
  2) Error estimate from a scale
    - Determine range, report as centered error.

Error estimates:
  1) Visual Scale
  2) Repeated measurement: range or std
  3) random vs systematic errors  
	
Standard form:
  1) Significant figures of best estimate +/- Significant figures of centered error
  2) fractional error

Discrepancy (difference):
  1) Overlapping error estimates
	- Can do better 
	
Error propagation:
  1) +- errors add
  2) */ fractional errors add
  3) addition in quadrature
  
Error in the mean
  1) d<x>=std(x)=1/sqrt(N)dx; 
  2) Conditions: random (symmetric) and uncorrelated