PSYC
354 Homework1
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PSYC 354 Homework1
Introduction to Statistics
When submitting this file, be sure the filename includes your full name,
course and section.
Be sure you
have reviewed
this
module/week’s lesson
and presentations before proceeding to the
homework exercises. Number all responses.
Review the “Homework Instructions:
General”
document
for an example of how homework assignments must look.
All Questions
Part I: Concepts
These questions are based on the Nolan and Heinzen reading and end-of-chapter questions.
Fill in the blank with the appropriate word or words.
1. A statistic that uses
sample data to make general
estimates about
the
larger population is statistic.
2. A statistic that
summarizes a group of
numbers is a(n)
statistic.
3. A(n) is a set of observations drawn from the larger group of interest.
4. The large group about which you
want
to know something is called .
5. A five-star rating system for
movies is a variable at
the
level of measurement.
6. A person's religious
preference is a variable
at the
level
of measurement.
7. A(n) variable
is a variable that meets the criteria for an
interval
and ratio variable.
8. Discrete values that
the
independent variable can take on are called
the of the
independent variable.
9. A variable that
is manipulated to determine
its effects on another variable is a(n)
variable.
10. A(n) variable
makes
it impossible to determine whether the
independent variable is the cause of changes in the dependent variable.
11. is the process of drawing conclusions about
whether or not a particular relation between variables is supported by the data.
12. The
hallmark of a(n)
is the random assignment of
participants to conditions
so that cause
and effect can be discovered.
13. When
each participant has the same
chance of being assigned to the various
levels of the manipulation, they are said
to be to
conditions.
14. Each
participant experiences all levels
of the independent
variable in a(n) design.
15. Participants
experience only one level
of the independent variable in
a(n) design.
Answer the following questions:
Question
1a-1b
A health
psychologists decides to study
the effects
of living
region (rural,
suburban, urban) on
the number of extra-curricular activities of residents.
1-a) What would
the
independent variable be in this study?
1-b) What would the dependent variable
be in
this study?
Question
2 (a-d)
Hsee and Tang (2007) reported the results of a study in which
195 college
students completed a
happiness
scale (from 1
to 7) one
day in
class.
On this scale, 1 corresponded to very unhappy and 7 to
very happy.
On average, the students rated their happiness as
6.18. Identify each of the following for this study.
Questions 3-6
Answer these general SPSS questions.
3) In which window do you enter data
in SPSS?
4) Which
window displays
the
results
of your analysis in
SPSS?
5) Which
SPSS main menu would you
use to
choose
a particular statistical test?
6) If you wanted to custom define a variable in SPSS, which window would
you open?
Question
7
Suppose you have administered a personality inventory to 12 people and
have recorded their score on
each item in
SPSS.
The
personality inventory has 8
items,
so the
SPSS file has
8 variables representing
each item (item1, item2,
etc.). You
want to compute
a total score for each
participant that represents
the
sum of items
1–8.
7a) Which
main SPSS menu
contains the option
for computing a variable like
this?
7b) According to
the
presentation and to Lesson 19
in
Green and Salkind, what could
you type into the
“Numeric Expression”
text box in order to have
SPSS add items
1–8 together? (There is
more than
one way to
do this.)
Submit Homework
1 by
11:59 p.m. (ET) on
Monday of Module/Week 1. Remember
to name file appropriately.
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