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Quiz: Descriptive Methods, Statistics, and Data Organization Results for Harold Hanson
Correct answers are hidden.
Score for this quiz: 77.5 out of 100
Submitted Feb 6 at 7:08pm
This attempt took 37 minutes.
2.5 / 2.5 pts
Question 1
A difference between histograms and bar graphs are that in
__________, each individual value would have its own separate
bar representing the frequency of that particular score.
histograms
frequency histograms
bar graphs
interval bar graphs
2.5 / 2.5 pts
Question 2
Which of the following statements best describe the “General
Principles” in the Ethical Principles of Psychologists and Code
of Conduct?
they inspire psychologists toward the very highest ethical ideals
of the profession
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they are the ethical standards by which psychologists must
abide
they outline the obligations of research psychologists
they form the basis for imposing sanctions
2.5 / 2.5 pts
Question 3
If deception is necessary in research, according to the Ethical
Principles of Psychologists and Code of Conduct, psychologists
must explain the deception no later than:
during Informed Consent before the start of the study
within a year of the study's end
at the conclusion of data collection
deception is never allowed
0 / 2.5 pts
Question 4
Incorrect
Incorrect
Which of the following does NOT have to be included in
Informed Consent?
all of these must be included
purpose of the research
foreseeable consequences of withdrawing from the study
whom to contact for questions about the research
Correct answer is in the ethics portion of the Jackson textbook and/or
the presentation on Ethics.
2.5 / 2.5 pts
Question 5
Which measure of VARIATIONis most appropriate for use with
ordinal data?
mode
median
range
average deviation
0 / 2.5 pts
Question 6
Incorrect
Incorrect
If Andre had a z score of 1.41, what percent of people scored
higher than him?
7.926%
57.926%
92.074%
42.074%
No. Answer is found in the presentations from Weeks 3 – 4.
0 / 2.5 pts
Question 7
Incorrect
Incorrect
Using the class interval frequency table below, identify the class width.
# completed tasks frequency Relative frequency
0-9 2 0.07
10-19 3 0.11
20-29 5 0.18
30-39 4 0.14
40-49 5 0.18
50-59 6 0.21
60-69 3 0.11
N=28
10
28
69
49
No. Answer is found in the presentations from Weeks 3 – 4.
0 / 2.5 pts
Question 8
Incorrect
Incorrect
What type of graph is most appropriate when categorizing a
nominal variable by another variable (and the bars do not
touch)?
scatterplot
bar graph
frequency polygon
histogram
No. Answer is found in the presentations from Weeks 3 – 4.
0 / 2.5 pts
Question 9
Incorrect
Incorrect
Whereas histograms are typically used for discrete, scale data,
what type of graph is typically used for continuous scale data?
frequency polygon
bar graph
histogram
scatterplot
No. Answer is found in the presentations from Weeks 3 – 4.
2.5 / 2.5 pts
Question 10
Which measure of central tendency is the most powerful?
standard deviation
mode
mean
median
0 / 2.5 pts
Question 11
Incorrect
Incorrect
Which of the following statements is NOT true for a standard
normal distribution?
all measures of central tendency fall in the middle
All of these statements are true
the mean =1
the area under the curve equals 1.0(100%)
No. Answer is found in the presentations from Weeks 3 – 4.
0 / 2.5 pts
Question 12
Incorrect
Incorrect
Using the class interval frequency table below, calculate the range.
# completed tasks frequency Relative frequency
0-9 2 0.07
10-19 3 0.11
20-29 5 0.18
30-39 4 0.14
40-49 5 0.18
50-59 6 0.21
60-69 3 0.11
N=28
70
9
69
10
No. Answer is found in the presentations from Weeks 3 – 4.
2.5 / 2.5 pts
Question 13
Rich’s rst psychology exam score is +1 standard deviation
from the mean in a normal distribution. The test has a mean of
60 and a standard deviation of 6. Rich’s percentile rank(NOT
grade) would be approximately
84%.
66%.
70%.
cannot determine from the information given
2.5 / 2.5 pts
Question 14
A graphical representation of a frequency distribution in which
vertical bars are centered above each category along the x-axis
and are separated from each other by a space is a _____.
bar graph
frequency polygon
pie graph
histogram
2.5 / 2.5 pts
Question 15
Faculty in the psychology department at State University
consume an average of 5 cups of coffee per day with a standard
deviation of 1. The distribution is normal. What proportion of
faculty consumes an amount between 4 and 6 cups?
.96
.68
.50
none of the options is correct
2.5 / 2.5 pts
Question 16
Faculty in the psychology department at State University
consume an average of 5 cups of coffee per day with a standard
deviation of 1.5. The distribution is normal. How many cups of
coffee would an individual at the 25th percentile drink per day?
5
4
6
7
2.5 / 2.5 pts
Question 17
The middle score in a distribution after the scores have been
arranged from highest to lowest or lowest to highest is the
_____.
mode
standard deviation
median
mean
2.5 / 2.5 pts
Question 18
When Ms. Jones calculated her students’ accounting test
scores, she noticed that one student had an extremely low
score. Which measure of central tendency should not be used in
this situation?
mean
median
mode
standard deviation
2.5 / 2.5 pts
Question 19
During the past year, Cindy and Bobby each read 2 books, but
Greg read 25, Jan read 12, and Marcia read 9. The median
number of books read by these individuals was
2.
50.
9.
10.
2.5 / 2.5 pts
Question 20
Marnie keeps answering the questions on the survey she is
taking as she thinks most others in society would answer them,
rather than with her true responses. Marnie’s answers illustrate
experimenter effects.
socially desirable responses.
interviewer bias.
sampling bias.
2.5 / 2.5 pts
Question 21
The calculation of the average deviation differs from the
calculation of the standard deviation in that when calculating
the average deviation the difference scores are
converted to absolute values.
squared and converted to absolute values.
squared.
it does not differ.
2.5 / 2.5 pts
Question 22
Mail surveys have the concern of _____ but have the advantage
of _____.
sampling bias; interviewer bias
increasing socially desirable responses; high return rate
low return rate; eliminating interviewer bias
interviewer bias; high return rate
2.5 / 2.5 pts
Question 23
In a psychology class of 100 students, test scores are normally
distributed with a mean of 80 and a standard deviation of 5.
Approximately what percentage of students have scores
between 70 and 90?
68%
99%
95%
80%
2.5 / 2.5 pts
Question 24
Which of the following is a disadvantage of using the range as a
measure of variation?
It can only be used with nominal data.
It is limited because only two of the scores in the distribution
are used to derive it.
It is easily distorted by an unusually high or low score in a
distribution.
It is limited because only two of the scores in the distribution
are used to derive it, and it is easily distorted by an unusually
high or low score in a distribution.
2.5 / 2.5 pts
Question 25
A variable for which the scores represent a change in quantity is
a _____ variable.
class interval
quantitative
nominal
qualitative
2.5 / 2.5 pts
Question 26
Karen’s rst psychology exam score is ‑1 (negative
one)standard deviation from the mean in a normal distribution.
The test has a mean of 75 and a standard deviation of 5. Karen’s
percentile rank would be
54%.
70%.
16%.
cannot determine from the information given
2.5 / 2.5 pts
Question 27
In order to generate a sample of students from her institution,
Julie selected every 10th name off of the registrar’s alphabetical
list of all students enrolled at her school. Julie is using the _____
sampling technique.
convenience
stratied random
random
cluster
2.5 / 2.5 pts
Question 28
Faculty in the psychology department at State University
consume an average of 5 cups of coffee per day with a standard
deviation of 1.5. The distribution is normal. What is the
percentile rank for an individual who consumed 8 cups of coffee
per day?
2.28
97.72
none of the options is correct
47.72
2.5 / 2.5 pts
Question 29
Rich is conducting a survey of student opinion of the dining hall
at his university. Rich decided to conduct his survey using
students enrolled in introductory psychology classes. The type
of sampling technique that Rich is using is
random sampling.
cluster sampling.
representative sampling.
stratied random sampling.
2.5 / 2.5 pts
Question 30
Studies in which the researcher actively participates in the
situation in which the research participants are involved utilize
_____ observation.
nonparticipant
undisguised
participant
disguised
0 / 2.5 pts
Question 31
Incorrect
Incorrect
A method that assesses the degree of relationship between two
variables is the _____ method.
survey
observational
case study
correlational
Incorrect. See Jackson textbook, ch. 1
0 / 2.5 pts
Question 32
Incorrect
Incorrect
A researcher wants to see if lighting levels affects worker
productivity at the Lights-n-More factory. To conduct this study,
the researcher manipulates the lighting levels each week for a
month, and assesses worker productivity for each month. Based
on this scenario, what is the independent variable?
worker productivity
none of the above
Lights-N-More factory
lighting level
Answer is in the presentations from Weeks 1 - 2
2.5 / 2.5 pts
Question 33
_____ reliability is determined by correlating scores on one half
of a measure with scores on the other half of the measure.
Test/retest
Interrater
Alternate-forms
Split-half
2.5 / 2.5 pts
Question 34
If you ask the rst 50 females who enter a restaurant to
complete a survey about their experience, who is the sample?
the 50 females who completed the survey
employees of the restaurant
all patrons of the restaurant
all females
2.5 / 2.5 pts
Question 35
_____ validity is the extent to which a measuring instrument
covers a representative sample of the domain of behaviors to
be measured.
Construct
Content
Face
Criterion
2.5 / 2.5 pts
Question 36
Mike pitched a great game on Saturday, and he believes that it is
because he wore his lucky socks. He has now decided that he
will wear these socks for every game of the season because he
believes that they will make him lucky. This belief is based on
_____.
rationalism
superstition
authority
science
2.5 / 2.5 pts
Question 37
A blood pressure reading is to a _____ measure as observing
how many patrons in a fast food restaurant take advantage of
free drink rells is to a ______ measure.
behavioral; physical
physical; behavioral self-report
physical; behavioral
behavioral; cognitive self-report
2.5 / 2.5 pts
Question 38
Descriptive methods include
correlational and quasi-experimental methods.
only the experimental method.
only the quasi-experimental method.
observational, case study, and survey methods.
2.5 / 2.5 pts
Question 39
A scale of measurement in which objects or individuals are
assigned to categories that have no numerical properties is a(n)
_____ scale.
ratio
ordinal
interval
nominal
2.5 / 2.5 pts
Question 40
In SPSS, you can delete unwanted sections of output by clicking
on the _________ of the Statistics Viewer window.
right side
left side
top panel
bottom panel
Quiz Score: 77.5 out of 100
