# Inferential Statistics

## Start Here

### 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 