StatAnal-exercises-lecture-2
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I. Derive formula for expression on bottom line of slide 9.
   Write down, scan and attach to PEGAZ system.


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II. Derive formula for expression on bottom line of slide 19.
    Write down, scan and attach to PEGAZ system.

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III. Programming exercise
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given the results of two straight line fits with errors
calculate uncertainty on the intersetion coordinates.
Illustrative plot on slide 3.

Implement solution which

--> generates data
    think about having correlated and uncorrelated examples
--> fits lines with errors
--> calculates uncertainty

Think about interpretation of the results.
Plot distributions, scatter plots and whatever other control plots
you find interesting for explaining the problem.
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