Functions of Random Variables: See Day
29.
Handouts:
--Two sided, the Lognormal distribution (W is lognormal, X = ln(W)
is normal. W = eX)
Skewed data often "turns normal" when you do a logarithm
to it. If so, the original data is "lognormal."
More about application
next time.
This handout has homework problems in the
corner.
-- One sided, deals with someY = -X questions.
HW: I think this is the
easiest sequence. You may feel differently. Feel free to vary.
For the weekend:
Do B from the handout (Discrete) (to hand in
Friday)
Then do (B,
C,, parts a,b,c) D from Day 29.
Then (optional for the weekend) do D from
the handout (any method the CDF
method) (to hand in)
- - - - - - - - - - -
For the rest, wait till we've looked at the Density
method:
(Day
29 B,C, parts d), D
from the handout by the Density method if
you didn't do it by the CDF method.
Then do A and C from the handout (to hand in)
#1, 3, 5 from the text are more complicated because the functions are
defined much more piecewise. Work on them, and use the answers, till
you understand them..
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