5 Written questions
5 Multiple choice questions
 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.  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.  for a data set is the difference between the third quartile and the
first quartile: Q3 Q1.  N=n1*n2/k
 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.
5 True/False questions

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

quantitative variable → is a variable which represents a measurable quantity,
one which can be represented by a number. 
random sampling → 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. 
doubleblind study → 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.

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.