1.1

1 statistics is the science of collecting, organizing, summarizing, and analyzing information to draw conclusions or answer questions.

3 individual

5 parameter; statistic

7 parameter

9 statistic

11 paremeter

13 parameter

15 qualitative

17 quantitative

19 quantative

21 qualitative

23 discrete

25 continuous

27 continous

29 discrete

39 population: 13-17 years of age, sample: 1028

40 population: Coca-Cola bottles filled on October 15, sample: 50 bottles

41 population: soybeans, sample: 100 plants

42 population: 50,000 housholds, sample: certain demographic characterstics

43 population: women (27-44 years old) sample: 7373 cases of hypertension

1.2

9 observational

10 experimental

11 experimental

12 observational

13 observational

14 observational

17

  1. This is an example of cohert study because the study involves the same group of people over a period of time.

  2. response: whether or not people have heart disease, explanatory variable: daily habits in their life.

  3. Genetics may act as a lurking variable because it can affect both emotions and heart disease.

20

  1. This is an observational study because surveys were conducted and the participants did not have to change anything about their lifestyle which would indicate an expiremental study. This is an example of a cohert study because it involves the same people over a period of time.

  2. response: weight gain, variable: changes in cohabitation and other life changes.

  3. A lurking variable could include outside health issues that could led to weight gain or genetics that cause a weight gain.

  4. No because there are so many lurking variables that could have contributed to any potential weight gain, making it almost impossible to indentify one cause of weight gain.