Assignment 2: Discussion: Measures of Central Tendency
By Saturday, July 18, 2015, post your response to the prompt in the Discussion Area below. Your initial response should be 1-2 paragraphs. Through Wednesday, July 22, 2015, review and comment on at least two peers’ responses.
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Discussion Question |
Simply reporting measures of central tendency or measures of variability will not tell the whole story. Using the following information, what else does a psychologist need to know or think about when interpreting this information?
A school psychologist decided to separate some classes by gender to see if learning improved. She looked at student scores on the final exam and obtained the following information: Students in boy-girl classrooms obtained an average of 71.4 on their final exams with a standard deviation of 10.8 whereas students in single-gendered classrooms obtained an average of 75.9 on their final exams with a standard deviation of 8.2. She concludes that the single-gendered classrooms lead to better learning.
Assignment 3: Research Design Questions
Suppose you were going to create your own study to examine what course-delivery format (online, blended, or face-to-face) leads to the best performance in a psychological statistics class. In a paper identify the following for your study:
- What is your research question?
- What is your hypothesis (both null and alternate)?
- Is this a qualitative or quantitative design (based on type of variable collected) and why?
- Is this a descriptive, correlational or experimental design and why?
- What would be an example of a variable for this study that could be measured on a nominal scale? Ordinal scale? Interval scale? Ratio scale?
- Once you have collected your data, would you use inferential or descriptive statistics and why?
- Create a sample frequency distribution for one of the variables. Choose either a simple or grouped frequency distribution and explain your choice.
By Monday, July 20, 2015, deliver your assignment to the M1: Assignment 3 Dropbox.
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Assignment 3 Grading Criteria |
Maximum Points |
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Identified an appropriate research question |
3 |
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Correctly identified the null and alternative hypotheses. |
6 |
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Explained whether your study would be classified as a qualitative or quantitative design and why. |
6 |
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Explained whether your study would be classified as a descriptive, correlational or experimental design and why. |
10 |
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Provided an example of a variable for this study that could be measure on a nominal scale, ordinal scale, interval scale, and ratio scale. |
13 |
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Explained whether inferential or descriptive statistics would be used to analyze the data collected and why. |
6 |
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Created a sample frequency distribution for one of the variables. Selected either a simple or grouped frequency distribution and explained choice. |
20 |
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Wrote in a clear, concise, and organized manner; demonstrated ethical scholarship in accurate representation and attribution of sources; displayed accurate spelling, grammar, and punctuation. |
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