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5 Written questions
5 Multiple choice questions
 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.  is an alternative to a census, in which data is collected from only some members of the population.
 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
population.  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.  is an extreme data point that does not t into the overall pattern of the rest of the data.
5 True/False questions

quantitative variable → is a variable which represents a measurable quantity,
one which can be represented by a number. 
mean → 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. 
Q1 → 25/100 * N

interquartile range → Maxmin

range → Maxmin