Statistics

Questions for (502)

· Research Article for Exam 1

Attached Files:

·  Trends in BMI.pdf (652.735 KB)

Please read this article and make sure you fully understand the major concepts we have discussed thus far.  

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Questions:

Using SHORT ANSWER or bullet format, respond to the following questions related to the BMI article assigned for this test. You are to work on this assignment alone. You may use your text, notes, and other resources, but you are strictly forbidden from discussing this test with your peers, colleagues, or anyone other than Mary Foster Cox. You MUST submit this in the link below. Emailed exams will not be accepted.

1. Identify the population and sample type in this study. Is the sample representative? Why or why not? 10 points

2. Identify all key constructs in this study. Identify ALL variables as independent, dependent, confounding, discrete, nominal, ordinal interval, ratio, quantitative, qualitative, et. al....include ALL appropriate descriptors for each variable. 30 points

3. Did the authors discuss reliability and validy? If so, what were they describing, and what were their comments? 10 points

4. Describe and critique all data displays in this article. What was clear, and what factors might have been less clear? Was the appropriate type of data display sued for the level of the variables? 25 points

5. What descriptive statistics were used? List all and briefly describe. 25 points