This preview shows pages 1–2. Sign up to view the full content.
This preview has intentionally blurred sections. Sign up to view the full version.
View Full Document
Unformatted text preview: Standardize and Use Table o More/less than 3 standard deviations arent realistic o Sampling error is not a plausible explanation for low sample mean Nonsampling error Selectionbias, or lying about parameters Sales Training Example o We dont know what the shape is, but it doesnt matter according to the Central Limit Thoerem o Expected mean to increase by 15 but not standard deviation o Slide 18 Sampling distribution of the difference of the means Sampling error cant explain the difference Difference Between Two Means o Combining bellshaped distributions gives another bellshaped distribution o As long as it is a linear combination Mean and Variance of Sampling Distribution of Difference o In order for the difference of the two to be bellshaped, both means need to independently produce a bellshaped distribution...
View
Full
Document
 Fall '11
 tanaka
 Economics

Click to edit the document details