HW1

1.1

• 1. The collection, organization and analyisis of data in order to come to concluaion one has confidence in.
• 3. An Individual.
• 5. A Statisic.
• 7. Parameter.
• 9. Statistic.
• 11. Parameter.
• 13. Statistic.
• 15. Qualitative.
• 17. Quantitative.
• 19. Quantitative.
• 21. Qualitative.
• 23. Discrete.
• 25. Continuous.
• 27. Contintuous.
• 29. Discrete.
• 39. Population: All US teenagers between the ages of 13 and 17, Sample: 1028 US teenagers between the ages of !3 and 17.
• 40. Population: All bottles of Coke filled on October 15, by one particulr filling machine, Sample: 15 bottles of coke filled on that date by the same filling machine.
• 41. Population: The entirety of the the farmer’s soy bean crop, Sample: 100 plants of the farmers crop.
• 42. Population: All US households, Sample: 50.000 US households.

1.2

• 13. Observational Study.
• 14. Observational Study.
• 15. Experiment.
• 16. Observational Study.
• 17. 1. A Cohort study, because te individuals are followed for ten years, and some individuals may be exposed to certain factors.

2. Response Variable: Heart Disease in the 1739 individuals, Explanatory Variable: Happiness in the 1739 individuals. c.The researchers are aware that multiple lurking variable could be at play, and could be interfering with the conclusions from the data.

• 18. 1. Cross sectional study, becouse it collects information over a short amount of time. Individiduals may develop skin cancer later on, so the the information gathered doesn’t show a full picture.

2. Response Variable: Non-malanoma skin cancer, Expanatory Variable: Cups of coffee.
3. Adjusting for these new variables allows for more information to be considered, and a more accurate conclusion.