



10. Use the x*p(x) column to calculate the expected mean: 



11. Is the expected mean the same as the mean you 



calculated from the original data in number 2? 



12. If there is a difference between the expected and 



and the mean calculated from the data, why do you 



think the difference occurred? 



13. What is the shape of the distribution? 



14. Is the distribution normal? 



15. Multiply the range by 60 to determine 



the range in seconds: 



16. Multiply the standard deviation by 60 



to determine the stdev in seconds: 



17. Lee Ling was striving to maintain the same pace 



throughout the run with using the data in class in mind. 



Comment on how well you think Lee Ling at maintaining 



a constant pace. 


