EDUC 750 Quiz: Quantitative Research
∑ Covers the Learn material from Module 4: Week 4. ∑ Contains 25 multiple-choice and true/false questions. ∑ Is limited to 60 minutes. ∑ Allows 1 attempt. ∑ Is worth 75 points.
Submit this assignment by 11:59 p.m. (ET) on Sunday of Module 4: Week 4.
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Score for this quiz: 72 out of 75
Submitted Nov 19 at 7:38pm This attempt took 36 minutes.
Time 36 minutes
Score 72 out of 75
Question 1
3 / 3 pts A researcher who draws conclusions about individual-level processes from group-level data may be making a (n) _ fallacy. ecological systemic reductionist individualist Question 2 3 / 3 pts In a study examining the effects of ADHD medication on school children, the children who don’t receive the medication would be the _ group. experimental
nontreatment
comparison
control
Question 3
3 / 3 pts Nonequivalent control group design is a type of _ design. random
quasi-experimental
before and after
representational
Question 4
3 / 3 pts Christopher Brown’s (2009) study examining the disconnect between prekindergarten and elementary school teaching approaches was an example of a (n): ex post facto study.
one shot case study.
true experiment.
quasi-experiment.
Question 5
3 / 3 pts
True experiments are good at producing , but not . reliability; internal validity
internal validity; external validity
measurement validity; internal validity
generalizability; measurement validity
Question 6
3 / 3 pts A major weakness of cross-sectional design is it: doesn’t take into account the time order of effects. is the most expensive type of design.
rarely yields results.
doesn’t actually test a causal hypothesis.
Question 7
3 / 3 pts When members of a treatment group change simply as a result of being part of an experiment this is called: the placebo effect.
self-fulfilling prophecy.
the John Henry effect
Hawthorne effect.
Question 8
3 / 3 pts In order to establish a causal relationship, there must be a (n) _ between variables. fallacy
correlation
observation
conclusion
Question 9
3 / 3 pts A repeated cross-sectional design is better than a panel design for testing causal hypothesis. True
False
Question 10
3 / 3 pts Identification of the context in which a causal relationship occurs is a required criterion for a valid causal relationship.
True
False
Question 11
3 / 3 pts All true experiments have a posttest.
True
False
Question 12
3 / 3 pts Subjects are not randomly assigned to the comparison and experimental groups in quasi-experimental design.
True
False
Question 13
3 / 3 pts Which measure of central tendency would be most affected by a small number of extreme cases? Mean
Median
Mode
Range
Question 14
3 / 3 pts Central tendency and variability of distributions are described through: inferential statistics.
interquartile graphs.
descriptive statistics.
summary statistics.
Question 15
3 / 3 pts Frequency distributions that display percentages must also include: grouped values.
the base N.
the number of missing cases.
relative frequency.
Question 16
3 / 3 pts The concept of _ is central to the ethical use of statistics. confidentiality
consent
honesty
relativity
Question 17
3 / 3 pts Which action is NOT included in the preparation for data analysis?
Review the forms
Create a codebook
Assign a unique identifying number
Filter the data
Question 18
3 / 3 pts The _ is computed by taking each score and subtracting the mean; then squaring the difference; then summing all these differences; then dividing this sum by the total number of scores. variance
interquartile range
standard deviation
confidence limit
Question 19
3 / 3 pts The correlation coefficient is a measure of:
variance.
digression.
confidence.
association.
IncorrectQuestion 20
0 / 3 pts Which measure of central tendency can summarize variables at the nominal level? Mean
Median
Mode
Range
Question 21
3 / 3 pts The criterion for statistical significance is the probability of _ that an association is due to chance. at least 95%
more than 50%
100%
less than 5%
Question 22
3 / 3 pts The first step in data analysis involves describing the distribution of each variable.
True
False
Question 23
3 / 3 pts Although data analysis is important, the plan for data analysis does not need to be included in a research proposal.
True
False
Question 24
3 / 3 pts The correlation coefficient is called Pearson’s r.
True
False
Question 25
3 / 3 pts Secondary analysis involves a substandard data set.
True
False
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Quiz Score: 72 out of 75
