Excellence
Year 13 Inference
I'm not going to make answers for this workbook as it is important that students process these ideas themselves, and write in their own words - not mine.
BUT, it is really important that you show your answers to your teacher and get feedback.
Other factors
Other factors
Workbook
Workbook
Pages 2 - 6
Pages 2 - 6
Measures of centre & spread
Measures of centre & spread
Measures of centre:
Measures of centre:
Measures of Spread:
Measures of Spread:
Workbook
Workbook
Pages 7 - 14
Pages 7 - 14
confidence intervals
confidence intervals
confidence intervals & sample size
confidence intervals & sample size
Thanks to Prof. Chris Wild, University of Auckland for the animation.
Notice that as the sample size increases, there is less variation in the sample medians.
Workbook
Workbook
Pages 15 - 16
Pages 15 - 16
confidence intervals
confidence intervals
Notice that the most of the confidence intervals contain the population mean (green) about 95% of the time.
Workbook
Workbook
Page 17
Page 17
Conclusion
Inference
Practice Assessment