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Lecture 5 Examples
• Review formula for mean and variance
• Finish the phone call and stock examples from
Lecture 4
• Illustrate how to set up X and Y, how to interpret
probability as proportion, connect to the normal
curve, distribution of items in the phone call bill.
• Explain again what independence mean using
these examples (explain the formula EXY=EX
EY)
• Leading to the need of correlation (stock example)