5 Written questions
5 Multiple choice questions
- is one of the contributing factors to sampling error. It is the result of choosing a bad sample. Good methods of sample selection minimize sample bias.
- 25/100 * N
- 75/100 * N
- is an extreme data point that does not t into the overall pattern of the rest of the data.
5 True/False questions
capture-recapture → N=n1*n2/k
random sampling → is a sampling method which uses random or probabilistic selection as part of its design.
confounding variable → is a possible contributing cause in a clinical study or trial that
could produce the same effect as the variable under investigation. A good clinical study or trial attempts to eliminate confounding variables using a control group.
survey → is an alternative to a census, in which data is collected from only some members of the population.
five-number summary → is a controlled placebo study in which neither the subjects nor the scientists conducting the study know which subjects are in the treatment group and which are in the control group.