Similar to film and music reviews which analyze and critique the whole work, a review of a play or musical should also critique the production as a whole, in addition to its variety of elements. The purpose of a review is to provide a potential audience with an unbiased opinion of the production, supported by facts. This last […]
Types of Data Give an example of a research question that includes an independent and a dependent variable. These are usually presented as, “How does A affect B?”, where A is your independent variable and B is your dependent variable. Describe the independent and dependent variables in terms of whether they are nominal (also called […]
Measures of Variability and Central Tendency Imagine you have collected information on a health-related variable for 12 study participants. For this discussion, come up with 12 different data points pertaining to one continuous variable and enter them into the first column in an Excel spreadsheet. Examples of potential variables include: age, temperature, body weight, height, […]
Graphs Give one example of health-related data (a variable) that can be represented by a pie chart. Do the same for a bar chart and a histogram. Explain why each data example you selected (there will be a total of three different variables) is well represented by the corresponding graph.
Standard Normal Distribution and the z-Score After viewing the Z-Score video clip, review Chapter 3 of your course text, which introduces probability and the standard normal distribution. Provide a description of the meaning and use of the z-score. Give an example that illustrates your answer.
Descriptive Data Analysis Review the instructions for your Final Paper in Week Five of your course or the “Components of Course Evaluation” section of the course guide. For this week’s assignment, utilize the following Excel data, which contains Body Mass Index (B.M.I.), Fasting Blood Sugar Levels (F.B.S.), gender, and clinic information for a group of […]
Choose the Analysis A researcher wishes to study the effect of a new drug on blood pressure. Would you recommend using a z-test, a t-test, or an A.N.O.V.A. for the analysis? Explain your answer. What would your choice of test depend on? For the test you select, explain your design and your comparison groups. Would […]
Repeated Measures Review Chapter 7 of your course text, which reviews inferential statistics that analyze experiments of repeated measures designs. For this discussion, search the Ashford University Library and find a scholarly, peer-reviewed study on any health or health informatics topic that used a repeated measures design. Reference the study and summarize the research question, […]
Guess the Correlation The Pearson correlation coefficient is a measure of degree of linear relationship between two variables. There are many correlated variables in health research: weight and height, smoking and drinking, health behaviors, etc. The bivariate scatter plot shown below illustrates a strong negative correlation between two variables: The next graph depicts a correlation […]
Regression Using the same data given in the previous discussion, the regression line is plotted below. The regression equation is y’= -301.27+6.96X. Explain what the regression line represents. Explain what each term of the equation represents and interpret this regression solution. Pick a height value and calculate the predicted weight for that height. These results […]
