Reference no: EM13920440
Part I
Part I checks your understanding of key concepts from Jackson and Trochim & Donnelly.
Answer the following questions:
1. Jackson even-numbered Chapter exercises (pp. 220-221; 273-275)
2. What are degrees of freedom? How are the calculated?
3. What do inferential statistics allow you to infer?
4. What is the General Linear Model (GLM)? Why does it matter?
5. Compare and contrast parametric and nonparametric statistics. Why and in what types of cases would you use one over the other?
6. Why is it important to pay attention to the assumptions of the statistical test? What are your options if your dependent variable scores are not normally distributed?
Part II
Part II introduces you to a debate in the field of education between those who support Null Hypothesis Significance Testing (NHST) and those who argue that NHST is poorly suited to most of the questions educators are interested in. Jackson (2012) and Trochim and Donnelly (2006) pretty much follow this model. Northcentral follows it. But, as the authors of the readings for Part II argue, using statistical analyses based on this model may yield very misleading results. You may or may not propose a study that uses alternative models of data analysis and presentation of findings (e.g., confidence intervals and effect sizes) or supplements NHST with another model. In any case, by learning about alternatives to NHST, you will better understand it and the culture of the field of education.
Answer the following questions:
1. What does p = .05 mean? What are some misconceptions about the meaning of p =.05? Why are they wrong? Should all research adhere to the p = .05 standard for significance? Why or why not?
2. Compare and contrast the concepts of effect size and statistical significance.
3. What is the difference between a statistically significant result and a clinically or "real world" significant result? Give examples of both.
4. What is NHST? Describe the assumptions of the model.
5. Describe and explain three criticisms of NHST.
6. Describe and explain two alternatives to NHST. What do their proponents consider to be their advantages?
7. Which type of analysis would best answer the research question you stated in Activity 1? Justify your answer.
|
What would sammy pizza report
: What would Sammy's Pizza report for net income and retained earnings for the years 2013, 2014, and 2015?
|
|
Purpose of conducting an experiment
: 2. What is the purpose of conducting an experiment? How does an experimental design accomplish its purpose? 3. What are the advantages and disadvantages of an experimental design in an educational study? 4. What is more important in an experimental ..
|
|
Consumer-oriented promotional strategies
: Select one (1) of the following categories of products to research: sports apparel, automobiles, home furnishings, or televisions. Use the Internet to research at least two (2) companies within the selected product category. Take note of the leadi..
|
|
Description of the neural impulse
: Refer to the "Learning the External Parts of the Neuron" animation. -A description of the neural impulse -The stages of neural conduction -The function of the primary neurotransmitters
|
|
Understanding of key concepts
: Part I checks your understanding of key concepts from Jackson and Trochim & Donnelly. Answer the following questions:
|
|
Find the minimum pretax earnings per year
: El Paso Company is planning to get a machine that will cost $14,000 and is expected to last for 7 years. The company uses straight-line depreciation. The tax rate of El Paso is 31% and the proper discount rate in this case is 12%. Find the minimum pr..
|
|
Destroying your personal home
: The decline in value of a personal car Giving your children $50,000,000 A Hurricane destroying your personal home
|
|
Police in the fight against crime
: As the United States becomes more diverse, the responsibilities expected of police in the fight against crime are becoming progressively more difficult to accomplish. The most effective approaches to crime prevention are community policing and red..
|
|
What is an f-ratio
: 1. Jackson, even-numbered Chapter Exercises, pp. 308-310. 2. What is an F-ratio? Define all the technical terms in your answer. 3. What is error variance and how is it calculated?
|