Inferential Statistics

Contents

1. Title page
   
   
2. Descriptive vs Inferential statistics
   
   
3. Inferential statistics is a leap into the unknown
   
   
4. Remember the study of students' drinking habits?
   
   
5. Your sample's mean was 10.54
   
   
6. You found that other people got different results
   
   
7. If you could get enough samples from that population ...
   
   
8. The Sampling Distribution of Sample Means
   
   
9. It has some useful properties
   
   
10. The third useful property
    
    
11. Estimate the Standard Error of the Mean
    
    
12. You use information about sample statistics to estimates of population parameters
    
    
13. The key to inferential statistics is the sampling distribution
    
    
14. Four important assuimptions
    
    
15. The mean and standard deviation of the sampling distribution
    
    
16. Standard errors are measures of sampling variability
    
    
17. A large standard error means that ....
    
    
18. Only two things influence the standard error
    
    
19. Standard errors and level of confidence
    
    
20. How close are you? How confident are you?
    
    
21. You know four things.
    
    
22. A picture showing how 95% of sample means are within +/- 1.96 SEM of the population mean
    
    
23. A picture showing how you can be 95% certain that .....
    
    
24. The Standard Error of Proportions
    
    
25. The Standard Error of Differences Between Means
    
    
26. Standard errors measure sampling variability
    
    
27. Two things affect sampling variability
    
    
28. Blank Slide
    
    

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Inferential Statistics

Last updated:
August 6, 2005

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