EDR 610 Quiz 5 – Question and Answers
Question 1
1 out of 1 points
Which of the following is a characteristic of non-experimental
... [Show More] designs?
Selected Answer: b.
They describe current existing characteristics such as achievement, attitudes, relationships, etc.
Question 2
1 out of 1 points
Which of the following non-experimental designs comes closest to examining causal relationships?
Selected Answer: c.
Causal comparative
Question 3
1 out of 1 points
The school psychologist was asked by one teacher to develop a program to eliminate the disruptive behaviors of one of her students. The psychologist needed more information about how often the behavior occurred, where it occurred, and what provoked the behavior. What type of study will the psychologist conduct to obtain this information?
Selected Answer: b.
Descriptive
Question 4
1 out of 1 points
Which of the following statements is NOT TRUE of relationship studies?
Selected Answer: c.
Relationship studies identify causal relationships.
Question 5
1 out of 1 points
Prediction studies are characterized by
Selected Answer: a.
One group of students being used to establish the predictive relationship.
Question 6
1 out of 1 points
When interpreting the results of correlational research, you may find that the low correlation reported by the researcher could be attributed to
Selected Answer: c.
Narrow range of scores on the measured variable.
Question 7
1 out of 1 points
In a study of high school drop-outs, it was found that students who came from homes where parents had not completed high school were more likely to drop out of school than similar students whose parents had completed high school. This is an example of
Selected Answer: b.
ex-post-facto research.
Question 8
1 out of 1 points
A researcher studied the physical and academic development of premature babies. After the first observation at birth, he studied them every five years until age twenty. This is an example of a (n)
Selected Answer: d.
Longitudinal study.
Question 9
1 out of 1 points
In which study are the same individuals studied over time?
Selected Answer: c.
Longitudinal
Question 10
1 out of 1 points
If a researcher is quite concerned about the response rate in his study, he could
Selected Answer: d.
All of the above.
Question 11
1 out of 1 points
A student has decided to use a web-based survey to collect data for his study. Which of the following would you recommend he do?
Selected Answer: a.
Ensure his sample has access to the appropriate hardware and software needed to complete the survey.
Question 12
1 out of 1 points
There are many correlational studies suggesting that student engagement (i.e., time-on-task) is highly correlated to student achievement. Which of the following suggestions is MOST reasonable given the limitations of correlational designs?
Selected Answer: c.
Design an experimental study
Question 13
1 out of 1 points
A correlational study examined the relationship between students' prior achievement and their level of self-regulated learning. The results were reported as statistically significant (r = .13, p. = .03). With what should you be concerned?
Selected Answer: d.
The practical, not statistical significance of the results
Question 14
1 out of 1 points
In experimental research, the researcher tries to keep which variable constant?
Selected Answer: c.
Extraneous
Question 15
1 out of 1 points
Internal validity refers to the extent to which
Selected Answer: b.
The manipulation of the experimental variable alone can account for the results.
Question 16
1 out of 1 points
Changes in subjects due to participation in an experiment is what type of threat to internal validity?
Selected Answer: c.
Subject effects
Question 17
1 out of 1 points
A researcher is studying the comparative efficacy of two methods for teaching the metric system to sixth graders. The school where the study is being conducted groups students according to ability, so the researcher assigns Method A to the honors math class and Method B to the next level. What threat to internal validity has occurred?
Selected Answer: c.
Selection
Question 18
1 out of 1 points
The question, "Can the findings from this study by generalized to other subjects?" is related to what aspect of a study?
Selected Answer: b.
External validity
Question 19
1 out of 1 points
Which of the following in NOT a potential external validity threat?
Selected Answer: c.
Random assignment of subjects to treatments
Question 20
1 out of 1 points
Which of the following is NOT a characteristic of the single group pretest-post-test design?
Selected Answer: a.
Internal validity is threatened by diffusion of treatment.
Question 21
1 out of 1 points
A major internal validity concern in a non-equivalent groups, pretest - post-test, experimental control group design is
Selected Answer: b.
Selection.
Question 22
1 out of 1 points
Dr. Landry is interested in examining the effects of a very demanding counseling approach to help college students stop smoking. There is typically a significant level of frustration experienced by his clients. Dr. Landry has chosen a randomized, pretest - post-test, experimental control group design. Which threat to internal validity should concern him MOST?
Selected Answer: c.
Subject attrition
Question 23
1 out of 1 points
Factorial experimental designs enable researchers to
Selected Answer: b.
Examine the interaction between two or more independent variables.
Question 24
1 out of 1 points
Which design enables the researcher to replicate a treatment for an individual over a number of different settings?
Selected Answer: d.
multiple-baseline
Question 25
1 out of 1 points
All of the following are criteria for evaluating single-subject research EXCEPT
Selected Answer: c.
The researcher should allow for only minor variations in the administration of the treatment.
Question 26
1 out of 1 points
With inferential statistics, the researcher can
Selected Answer: a.
Draw inferneces about a population from sample data.
Question 27
1 out of 1 points
Probability can be defined as
Selected Answer: d.
The degree of confidence in inferring from samples to populations.
Question 28
1 out of 1 points
During a study a researcher should attempt to control which of the following?
Selected Answer: e.
All of the above
Question 29
1 out of 1 points
Inferential statistics are needed because
Selected Answer: d.
There is error in sampling and measurement.
Question 30
1 out of 1 points
A researcher compared two methods for teaching inferential statistics to college students. Group 1 was taught with Method A, and Group 2 with Method B. A comparison of post-test scores indicated that the results were significantly different (p = .05) in favor of Method A. This means that
Selected Answer: b.
There is a 5% probability that the difference is due to chance.
Question 31
1 out of 1 points
Which of the following reflects the logic of inferential testing?
Selected Answer: e.
All of the above.
Question 32
1 out of 1 points
A researcher is trying to determine which is the more effective method for teaching comprehension skills to learning disabled students, Method A or Method B. There is no difference between Method A and Method B according to which hypothesis?
Selected Answer: c.
Null
Question 33
1 out of 1 points
Suppose a researcher must obtain a significance level of p = .01 to reject the null hypothesis. After analyzing his data, he finds that his results are significant at the p = .001 level. The researcher should
Selected Answer: d.
Reject the null hypothesis because .001 is less than .01.
Question 34
1 out of 1 points
Which of the following decisions accurately describes a significant result?
Selected Answer: b.
Reject the null hypothesis
Question 35
1 out of 1 points
A researcher who makes a Type II error
Selected Answer: a.
Fails to reject the null hypothesis when it is false.
Question 36
1 out of 1 points
Which of the following set of assumptions can be made when using parametric statistics?
Selected Answer: a.
Measures of equal interval, normally distributed population, equal variances of each group.
Question 37
1 out of 1 points
In a study investigating the effects of a social skills training program, pretest and post-test scores were obtained from 30 students diagnosed as behaviorally disordered. Which statistical test should the researcher use to test the null hypothesis that there is no difference between the pre-test and post-test scores?
Selected Answer: c.
Dependent t-test
Question 38
1 out of 1 points
A fourth-grade teacher wants to determine the efficacy of a new spelling method with each of her four reading groups. She uses the new method for several weeks, then conducts a test. Which statistical procedure should this teacher use to answer the following question: Is there a significant difference in test scores between any two reading groups?
Selected Answer: a.
Multiple comparisons
Question 39
1 out of 1 points
Which of the following is true of an analysis of covariance (ANCOVA)?
Selected Answer: c.
It adjusts for pretest differences between groups
Question 40
1 out of 1 points
Multivariate statistical procedures allow a researcher to
Selected Answer: b.
Analyze a number of dependent variables simultaneously. [Show Less]