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5 Written questions
5 Multiple choice questions
 is an extreme data point that does not t into the overall pattern of the rest of the data.
 is a sampling method which uses random or probabilistic selection as part of its design.
 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.
 for a data set is the difference between the third quartile and the
first quartile: Q3 Q1.  of a quantitative data set is a summary of the center of the data set.
It is computed by adding the data elements together and dividing by N, the number of
data elements.
5 True/False questions

Q1 → 75/100 * N

survey → is an alternative to a census, in which data is collected from only some members of the population.

Q3 → 75/100 * N

sample bias → 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.

fivenumber summary → for a data set consists of the minimum value in the data set
Min, the first quartile Q1, the median M = Q2, the third quartile Q3, and the maximum value Max.