What are the indicators for using a regression analysis? Create a research scenario in which it would be correct to use a regression analysis, including the research question, sample size, and dependent and independent variables? What are the indicators for using an ANOVA? Create a research scenario in which it would be correct to use an ANOVA, including the research question, sample size, and dependent and independent variables. What are the indicators for using a t-test? Create a research scenario in which it would be correct to use a t-test, including the research question, sample size, and dependent and independent variables.
When students talk about “grading on the curve,” how does that apply to the normal distribution?ĭiscuss the differences between the concepts of correlation and causality, and why it is critically important to make sure that the differences are understood? Why do you think so many people have problems with using, interpreting, or applying statistics in making business decisions?Īs you have learned to evaluate different research studies, what elements seem the most important to you for evaluation of the research’s quality? Why?ĭiscuss the concept of the normal distribution, why it is important, and what you think it means.
Given that there is a documented advantage to the use of an experimental and control group design, discuss why other designs are frequently used, and the situations that may prompt the use of one.ĭiscuss your understanding of the concept of internal validity in a research study, and the impacts of several errors or biases that can reduce the study’s validity. study both used their review of literature to help the reader understand why the research question was asked? How could they have done it more effectively? How effectively do you think the Coyne et al. What kinds of extraneous variables (not cited in the studies) do you think could have affected the relationships between the independent variables and the dependent variables in both the Messina et al. First, do you think it’s true? If it is, what do you think about their rationale? How would you address it if the question were posed to you in a forum? Why do you think many healthcare practitioners are often unwilling to change practice patterns, based on research findings? Some practitioners criticize evidence-based practice as “cookbook care.” Considering these perceptions, how would you utilize your education and experiences in planning the implementation of a major change?Ĭonsider the question: “Why do physicians and nurses kill more people than airline pilots?” Apply your critical thinking skills to this argument and critique the statement. ROUTE ROUTE2 ROUTES MONDAY MIDDLE OF WEEK FRIDAY 342 30.8 32.1 22.7 24. of 6 MA 321 Data Analysis Two-Way ANOVA Homework d) (ii) Give reason(s) for your answer in part (1): (4 pts.) e) If your answer to part (d) is "yes", determine where the significance lies (6 pts)
Following is a table of mean times: Weekday Route Monday Middle of Week Friday Route 1 34.2 30.8 32.1 Route 2 22.7 24.6 26.0 Route 3 38.6 34.1 32.9 a) State the null hypotheses and the alternate hypotheses (6 pts.) b) Encode the data into an Excel worksheet and run the appropriate ANOVA (Submit your Excel results) (8 pts.) c) Interpret the results (8 pts.) d) Is there any significance in the results? Yes_-_-No. She takes ten observations on each of the possible combinations for a total of 90 measurements. She suspects the day of the week might make a difference - Monday. A commuter has a choice of three different routes (Factor A) to take to work and is interested in knowing if any of them are faster than the others. Transcribed image text: MA 321 Data Analysis Two-Way ANOVA Homework page 5 of 6 3.
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