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1. Locate a research study stating a hypothesis and try to
identify the theory from which the hypothesis originated.
2. A researcher has a theory about children’s ordinal
position in the family and their achievement motivation. Write a research
hypothesis and a hypothesis in null form.

Evaluate the following statements as possible research
hypotheses:
a. “Asian high school students are better in mathematics
than American high school students.”
b. “Do SAT prep courses improve students’ scores on the
SAT?”
c. “Students who participate in the high school volunteerism
program become better adult citizens than students who do not.”

Formulate a tentative research plan for
your class project.
a. What is the general research problem
under consideration for investigation?
b. State the preceding general research
problem as a research question.
c. Explain the rationale for such a study.
What are its theoretical or practical
applications?
d. State the hypothesis (or hypotheses) for
this study.
e. Was this hypothesis derived deductively
from theory or inductively from experience and observation?
Explain.
f. Identify the variables in the study and
operationally defi ne each.
g. What kind of research methodology will
be required for this study?
h. What subjects (sample) will you select
for the study?
i. Have you located any published research
related to your problem? If so, briefl y
summarize the fi ndings.

Which of the following evidence contributes
to the development of a theory?
a. Evidence that supports a hypothesis
b. Evidence that contradicts a hypothesis
c. Both of the above

Select a theory that you fi nd interesting and derive a
research hypothesis from this theory. You might choose a learning theory,
motivational theory, theory of cognitive dissonance, or any other educational
or psychological theory

Identify the type of measurement scale—
nominal, ordinal, interval, or ratio—
suggested by each statement:
a. John fi nished the math test in 35 minutes, whereas Jack
fi nished the same
test in 25 minutes.
b. Jack speaks French, but John does not.
c. Jack is taller than John.
d. John is 6 feet 2 inches tall.
e. John’s IQ is 120, whereas Jack’s IQ is 110.

Draw a histogram and a frequency polygon for the following
frequency distribution:

Provide answers as requested, given the
following distribution: 15, 14, 14, 13, 11, 10,
10, 10, 8, 5.
a. Calculate the mean.
b. Determine the value of the median.
c. Determine the value of the mode

1. Briefl y explain the relationship between the skewness of
a distribution of scores and the resulting values of the mean, median, and
mode.
2. Identify the measure—mode, mean, or
median—that best suits each type of scale:
a. Ordinal
b. Nominal
c. Interval

Identify the measure—mode, mean, or
median—that each term defi nes:
a. The middle score
b. The arithmetic average
c. The most frequently occurring score