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yeahyeah
11-01-2010, 10:25 AM
The density of the standard normal distribution is given to us.

Do you think we need to memorize the density of the normal distribution? Which is:

f(x) = 1/[sigma*(2pi)^.5]*e^-(x-mu)^2/2sigma^2

One situation in which this might come up is finding the MLE for a normal distribution when you do not have complete individual data.

Seabass66
11-01-2010, 11:00 AM
I am thinking any distribution that we will need will be provided for us, otherwise memorize it to save time during the exam.

JMI
11-01-2010, 11:06 AM
Isn't it (2pi)^.5.

yeahyeah
11-01-2010, 06:39 PM
Yeah (2pi)^.5

I just realized that the formula is basically given to us as the lognormal distribution. Just get rid of the 1/x and change the ln(x) to just x. Simple just need to remember to get rid of the 1/x

kernel
11-01-2010, 11:21 PM
they give you this in the case of the standardized normal variable in the front of the manual.

yeahyeah
11-02-2010, 07:48 PM
I know they give us the standard normal density, but that doesn't help all that much for the non-standard normal does it?