clt review - Notes for 11-23-2009 Review of CLT: What we...

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Notes for 11-23-2009 Review of CLT: What we need: n > 30 and the observations to come from the same distribution with the same mean and variance. If we have iid sampling with n > 30, mean equal to mu, and standard deviation equal to sigma, then the sum of these observations are Normally distributed with mean equal to n*mu and standard deviation equal to * n . If we have iid sampling with n > 30, mean equal to mu, and standard deviation equal to sigma, then the sample average of these observations (which is denoted by what?) are Normally distributed with mean equal to mu and standard deviation equal to n . Difference of point estimator and point estimate: Point estimator: refers to the process or concept like ˆ , p, or s x are point estimators of , p, and  respectively. However, the numerical values of ˆ , p, or s x are what we call the point estimate. Remember, earlier we called numerical descriptions of the population __________________ and numerical descriptions of the sample _____________. We use the _______________ as a point estimate of the ________________.
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This note was uploaded on 02/06/2012 for the course STAT 225 taught by Professor Martin during the Spring '08 term at Purdue University-West Lafayette.

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clt review - Notes for 11-23-2009 Review of CLT: What we...

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