February 13
February 13
February 13
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CONFIDENCE INTERVAL<br />
CAUTIONS<br />
!<br />
!<br />
Different methods are needed for<br />
different sampling designs<br />
There is no correct method for<br />
inference from BAD data (bias,<br />
poorly collected, no known sample<br />
size)<br />
! Outliers can distort the results<br />
!<br />
!<br />
The shape of the population<br />
distribution matters (condition 2)<br />
FOR z we must know σ<br />
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