Discuss ways to ensure internal validity for a measure of work stress among nurses
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Discuss ways to ensure internal validity for a measure of work stress among nurses
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- Describe the basic requirements that a data set must meet before it may be subjected to statistical analysis. How can one be assured that these requirements are met in a particular situation? Discuss gross violations of these requirements.Explain the preparation and validation of instruments in research.Define tests of statistical significance
- Errors in age reporting, particularly under reporting of children aged less than one is a serious error with far reaching implications. Evaluate any three major ways in which statistical agencies can contribute to and worsen this problem.The Wall Street Journal subscriber survey (October 13, 2003) asked 46 questions about subscriber characteristics and interests. State whether each of the following questions provided qualitative, discrete or continuous variable and indicate the measurement scale appropriate for each. •What is your age? •Are you male or female? •When did you first start reading the WSJ? High school, college, early career, midcareer, late career, or retirement? •How long have you been in your present job or position? •What type of vehicle are you considering for your next purchase? response categories include sedan, sports car, SUV, minivan, and so on.Evaluate the effectiveness of alternative screening tests when given appropriate information.
- Explain the concept of Measurement Error and Errors-in-Variables Bias with suitable example?What can researchers do to ensure their survey is valid? Why is this important? What are the different types of validity that should be considered? What other concerns may affect validity of the survey?Define “attributable risk” and explain the interpretation of this measure of association. What are the basic uses of descriptive statistics? State and define the three measures of Central tendency.
