Statistics for the Behavioral & Social Sciences
Question Description
Focus of the Final Exam Your complete Word document must include a title page with the following: Part I: Essay QuestionsThere are three essay questions in this section. You must
answer all three questions. The length of each essay should be one to
two double-spaced pages (excluding title and reference pages). Use
12-point font and format your paper with regular 1-inch margins. Do not
include the essay prompt in your document. It will not count toward
the length requirement for your essays. For this essay, describe the statistical approaches (e.g., identify
the hypotheses and research methods) used in this excerpt from a
research study. Interpret the statistical results and examine the
limitations of the statistical methods. Finally, evaluate the research
study as a whole and apply what you have learned about hypothesis
testing and inferential statistics by discussing how you might conduct a
follow-up study. Your essay must address the following points: Essay 2A researcher has investigated the relationship between IQ and grade point average (GPA) and found the correlation to be .75. For this essay, critique the results and interpretation of a correlational study. Your essay response must address the following questions: Essay 3A researcher has recorded the reaction times of 20
individuals on a memory assessment. The following table indicates the
individual times: 2.2 4.7 7.3 4.1 9.5 15.2 4.3 9.5 2.7 3.1 9.2 2.9 8.2 7.6 3.5 2.5 9.3 4.8 8.5 8.1 In this essay, demonstrate your ability to organize data into
meaningful sets, calculate basic descriptive statistics, interpret the
results, and evaluate the effects of outliers and changes in the
variables. You may use Excel, one of the many free online descriptive
statistics calculators, or calculate the values by hand and/or with a
calculator. Next, separate the data into two groups of 10; one group will be the
lower reaction times, and the second group will be the higher reaction
times. Then, address the following points in your essay response: Lastly, double each sample by repeating the same 10 data points in
each group. You will have a total of 20 data points for each group.
After completing this, address the following in your essay response: Part B: Research Study CritiqueIn this second portion of the Final Exam, you will identify and
critically evaluate a quantitative research article based on a social
science topic. Your selected article must include a research
question(s) and/or hypothesis(es) and utilize statistical analyses
covered in the course. The article must be peer-reviewed and published
within the last 10 years. The Research Study Critique:
The purpose of the Final Exam is to assess your understanding of the
main statistical concepts covered in this course and to evaluate your
ability to critically review a quantitative research article. The exam
will consist of two parts: Part I includes three essay questions and
Part II includes a research critique. All of your responses should be
included in a single Word document for submission.
Please include the following general headings for each section of the written exam within your Word document:
Part I: Essay Questions1. Essay 1
2. Essay 2
3. Essay 3
Part II: Research Study Critique1. Introduction
2. Methods
3. Results
4. Discussion
1. Student’s name
2. Course name and number
3. Instructor’s name
4. Date submitted
Essay 1A group of researchers conducted an experiment to
determine which vaccine is more effective for preventing getting the
flu. They tested two different types of vaccines: a shot and a nasal
spray. To test the effectiveness, 1000 participants were randomly
selected with 500 people getting the shot and 500 the nasal spray. Of
the 500 people were treated with the shot, 80 developed the flu and 420
did not. Of the people who were treated with the nasal spray, 120 people
developed the flu and 380 did not. The level of significance was set at
.05. The proportion of people who were treated with the shot who
developed the flu = .16, and the proportion of the people who were
treated with the nasal spray was .24. The calculated p value = .0008.
In the body of your critique, describe the statistical approaches used,
the variables included, the hypothesis(es) proposed, and the
interpretation of the results. In your conclusion, suggest other
statistical approaches that could have been used and, if appropriate,
suggest alternative interpretations of the results. This process will
allow you to apply the concepts learned throughout the course in the
interpretation of actual scientific research. Your critique must include
the following sections:
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