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# 18.10: Statistics

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1.

1. Population is the current representatives in the state’s congress
2. 106
3. the 28 representatives surveyed
4. 14 out of 28 = $$\frac{1}{2}$$ = 50%
5. We might expect 50% of the 106 representatives = 53 representatives

3. This suffers from leading question bias

5. This question would likely suffer from a perceived lack of anonymity

7. This suffers from leading question bias

9. Quantitative

11. Observational study

13. Stratified sample

15.

1. Group 1, receiving the vaccine
2. Group 2 is acting as a control group. They are not receiving the treatment (new vaccine).
3. The study is at least blind. We are not provided enough information to determine if it is double-blind.
4. This is a controlled experiment

17.

1. Census
2. Observational study

18.10: Statistics is shared under a CC BY-SA 3.0 license and was authored, remixed, and/or curated by David Lippman via source content that was edited to conform to the style and standards of the LibreTexts platform; a detailed edit history is available upon request.