1. Principles of Experiment
Bias
Principles of Experiment
Sampling
Design
Experiment
components
Potpourri
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2. The answer is:
Any systematic failure of a sampling method to represent its population.

3. The answer in the form of a question is:
What is bias?

4. The answer is:
Bias introduced to a sample when a large fraction of those sampled fails to respond.

5. What is non-response bias?
The answer in the form of a question is:
What is non-response bias?

6. The answer is:
Bias introduced to a sample when individuals can choose on their own whether to participate in the sample.

7. What is voluntary response bias?
The answer in the form of a question is:
What is voluntary response bias?

8. The answer is:
A sampling scheme that biases the sample in a way that gives a part of the population less representation than it has in the population.

9. The answer in the form of a question is:
What is undercoverage?

10. The answer is:
Anything in a survey design that influences responses, ie; wording of questions, vocabulary, etc.

11. The answer in the form of a question is:
What is a response bias?

12. The answer is:
A term for identifying the effects of extraneous variables on the response – making experimental conditions as identical as possible for all units.

13. The answer in the form of a question is:
What is control?

14. A term for using chance to assign subjects to treatments.
The answer is:
A term for using chance to assign subjects to treatments.

15. The answer in the form of a question is:
What is randomization?

16. The answer is:
A term for performing the experiment on many subjects to quantify the natural variation in the experiment.

17. The answer in the form of a question is:
What is replication?

18. The answer is:
A term used to reduce the effects of identifiable attributes of the subjects that cannot be controlled.

19. The answer in the form of a question is:
What is blocking?

20. The answer is:
The experimental units assigned to a baseline treatment level, typically either the default treatment or a placebo treatment.

21. The answer in the form of a question is:
What is a control group?

22. The answer is:
A sampling design that consists of individuals who are conveniently available.

23. What is a convenience sample?
The answer in the form of a question is:
What is a convenience sample?

24. The answer is:
A sampling design in which each set of n elements in the population has an equal chance of selection.

25. What is a simple random sample?
The answer in the form of a question is:
What is a simple random sample?

26. The answer is:
A sampling design in which the population is divided into several homogeneous subgroups and then random samples are drawn.

27. What is a stratified sample?
The answer in the form of a question is:
What is a stratified sample?

28. A sampling design in which entire groups are chosen at random
A sampling design in which entire groups are chosen at random. Each group is a heterogeneous representative sample of the population and similar to each other.
The answer is:

29. What is a cluster sample?
The answer in the form of a question is:
What is a cluster sample?

30. The answer is:
A sampling design in which every kth individual is selected from a sampling frame.

31. What is a systematic sample?
The answer in the form of a question is:
What is a systematic sample?

32. A variable whose levels are controlled by the experimenter.
The answer is:
A variable whose levels are controlled by the experimenter.

33. The answer in the form of a question is:
What is a factor?

34. The answer is:
Individuals on whom an experiment is performed, namely subjects or participants.

35. What experimental units?
The answer in the form of a question is:
What experimental units?

36. The specific values that the experimenter chooses for a factor.
The answer is:
The specific values that the experimenter chooses for a factor.

37. The answer in the form of a question is:
What are levels?

38. The answer is:
The process, intervention, or other controlled circumstance applied to randomly assigned experimental units.

39. The answer in the form of a question is:
What are treatments?

40. The answer is:
A treatment known to have no effect, administered so that all groups experience the same conditions.

41. The answer in the form of a question is:
What is a placebo?

42. The answer is:
A design in which units are sorted into subgroups before treatments are randomly assigned.

43. What is a randomized block design?
The answer in the form of a question is:
What is a randomized block design?

44. The answer is:
A design in which all experimental units have an equal chance of receiving any treatment.

45. What is a completely randomized design?
The answer in the form of a question is:
What is a completely randomized design?

46. The answer is:
The natural tendency of randomly drawn samples to differ, one from another.

47. What is sampling error (variability)?
The answer in the form of a question is:
What is sampling error (variability)?

48. The answer is:
A situation where the effects of two or more explanatory variables on the response variable cannot be separated.

49. The answer in the form of a question is:
What is confounding?

50. The answer is:
When an observed difference is too large for us to believe that it is likely to have occurred naturally.

51. What is statistically significant?
The answer in the form of a question is:
What is statistically significant?