INTRO TO STATISTICS UNIT 1
PRACTICE MILESTONE 1 WITH
REVIEWED ANSWERS
Which of these statements is true about a blind experiment?
a.) The total population is divided roughly into some groups and
then some of the groups are randomly selected.
b.) Some people involved are prevented from knowing certain
information that might lead to biased results.
c.) Closely matched elements are paired and then treatments
are allotted to them.
d.) The total population is divided into homogeneous blocks. -
CORRECT ANSWER-b.
-Blinding helps to prevent members of a study know key
information in order to prevent them from behaving or
responding in a fashion that would be biased if they knew if
they were in a treatment or control group. For example, if you
knew you were in a treatment group, you might be more
inclined to say it is working or give responses that indicate that
it is.
A binomial question is __________ an open question. A closed
question is __________ a binomial question.
a.) never; always
b.) never; sometimes
c.) always; sometimes
d.) always; never - CORRECT ANSWER-b.
Which of the following describes simple random sampling?
a.) Divide the population into groups, and then randomly select
some groups. Choose all the members within the selected
groups to be part of the sample.
