Randomization is important when assigning the students to the treatment and control groups to ensure
A college professor hypothesizes that readers will
comprehend more when reading a graphic novel than
when reading text with no illustrations. To conduct an
experiment, the professor will assign some students to
the control group with a reading assignment in paragraph
form and other students to the treatment group with a
reading assignment in graphic novel form. Afterwards, all
the students will take a quiz about the reading.
O that both groups are made up of students from the
same class.
O that the treatment group has more students to better
test the hypothesis.
O that each student does not know about the alternative
version of the assignment.
O that both groups are roughly equivalent with regards
to students' gender, reading ability, and study habits.
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