1.1

1 The science of collecting, organizing, summarizing, and analyzing information to draw conclusions or answer questions. In addition, statistics is about providing a measure of confidence in any conclusions.

3 individual

5 statistic ,parameter

7 parameter

9 parameter

11 statistic

13 statistic

15 qualitative

17 quantitative

19 quantitative

21 qualitative

23 discrete

25 continuous

27 continuous

29 discrete

39 Population: All the teenagers who are 13 to 17 years of age and live in the U.S. Sample:1028 teenagers of them

40 Population: All the Coca-Cola that were filled on October 15 Sample:50 bottles of Coca-Cola that were filled on October 15

41 Population: All the crops the farmer plants Sample:100 pants he randomly sampled

42 Population: all households within the U.S. Sample: 50000 households.

43 Population: Women (27 to 44 years of age) with hypertension in the U.S. Sample:7373 womem among them.

1.2

9 observational study

10 experiment

11 experiment

12 observational study

13 observational study

14 observational study

17

  1. cohort study

  2. reponse variable:risk of heart disease explanatary variable: level of happiness

  3. genetics could be a lurking varibale

20

  1. yes, cohort study

  2. reponse variable:weight after marriage or cohabitate explanatary variable: weight when s/he is single

  3. Any disease or medicine people have after marriage or cohabitate, plus different work out habbit (or don’t workout at all).

  4. No, because this is a obercational study. We can say they are associate to each other, but we cannot claim causation.