## (Answered) Unit I Assignment Homework Create one APA style Word document

Unit I Assignment

Homework

Create one APA style Word document
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Unit I Assignment ,

Homework ,

Create one APA style Word document with a cover page to submit for the assignment that answers the following questions. References are NOT required. Limit each response to a maximum of 250 words; many responses may only require 100 words or less. Please include the questions so that the instructor can clearly identify your responses. Be sure to read each question carefully. ,

1. Topic: What is the area of research you are interested in (1-3 sentences)? (1 pt., required) ,

2. Variables: Related to your research topic, list 4 variables that might be measured. The 4 variables must include one from each of the following measurement scales: nominal, ordinal, interval, and ratio variable. If you cannot find a variable for a scale, explain why it is difficult, given your topic of interest. (9 pts.) ,

3. Hypotheses: Create both a hypothesis and a null hypothesis related to your topic. (7 pts.) ,

4. Research Approach: Describe whether experimental or correlational research would be better for your topic. What would be the costs/benefits of each approach? (9 pts.) ,

5. Reliability/Validity: Related to your topic, describe the importance of reliability and validity. Explain whether it is possible to have one without the other, and why. (9 pts.) ,

6. Sample/Population: What is the difference between a sample and a population? Why is the difference important in statistics? (9 pts.) ,

7. Central Tendency: Consider the follow data set. What are the mean, median, and mode? Which measure of central tendency best describes this data? Why? Use a calculator, Excel, or any other means desired for the calculations. (9 pts.) ,

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110.00 ,

117.00 ,

120.00 ,

118.00 ,

104.00 ,

100.00 ,

107.00 ,

115.00 ,

115.00 ,

115.00 ,

114.00 ,

100.00 ,

117.00 ,

115.00 ,

103.00 ,

105.00 ,

110.00 ,

115.00 ,

250.00 ,

275.00 ,

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8. Dispersion: Using the same data set (above), calculate the range, interquartile range, variance, and standard deviation. What do the results indicate about the ?spread? of the data? (9 pts.) ,

9. Descriptive Statistics: Why is it important to calculate the basic descriptive statistics before completing inferential statistical analyses? (9 pts.) ,

10. Statistical Significance: Considering the hypotheses created in question 5, if the results of a statistical test on them returned a statistically significant result, what would that mean from both a practical and a statistical viewpoint? (Hint: be sure to include ?null hypothesis? and ?effect size? in your response). (9 pts.) ,

11. Type I & Type II error: Considering your response to question 10, what are the implications of making a Type I error? Type II error? (9 pts.) ,

12. Concerns: Are there any concerns you would like to share with your professor? (1 pt., and required). ,

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