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.
- is a sampling technique in which every member of the population should have the same (random) chance of being in the sample as any other member of the
- is an alternative to a census, in which data is collected from only some members of the population.
- 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.
5 True/False Questions
outlier → is an extreme data point that does not t into the overall pattern of the rest of the data.
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.
mean → 25/100 * N
Q3 → 25/100 * N
capture-recapture → N=n1*n2/k