Select Page

## ANOVA

ANOVA
All of us have had our blood pressure measured while at our physicianâ€™s office. How accurate are these measurements? It may surprise you to learn that there is something called â€œwhite coat syndromeâ€â€”the tendency of some people to exhibit elevated blood pressure in clinical (medical) settings only. In other words, for these people, the very fact that the physician is taking their blood pressure causes it to increase In this activity, you will be using the â€œActivity 4c.savâ€ data file to determine whether you find support for the existence of white coat syndrome. In this study, 60 participants were randomly assigned to one of three groups. The â€œsettingsâ€ variable indicates the location in which the participantsâ€™ blood pressure was recorded: 1=home, 2=in a doctorâ€™s office, and 3=in a classroom setting. The â€œSystolicBPâ€ variable contains the participantsâ€™ systolic pressure (the â€œupperâ€ number). The â€œDiastolicBPâ€ variable contains the participantâ€™s diastolic pressure (the â€œlowerâ€ number).
Exploratory Data Analysis/Hypotheses.

1. Perform exploratory data analysis on both the SystolicBP and DiastolicBP variables. Using SPSS, calculate the mean and standard deviation of these two variables. Be sure that your analysis is broken down by setting (e.g., you will have six means, six SDâ€™s, etc.).
2. Create two graphsâ€”one for systolic and one for diastolic pressure. Each graph should clearly delineate the three groups.
3. Write a null and alternative hypothesis for the comparison of the three groups (note that your hypothesis will state that the three groups are equivalent; be sure to word your null hypothesis correctly).
1. ANOVA.
1. Using the â€œActivity 4c.savâ€ data file, perform two single factor ANOVAs: one using SystolicBP and one using DiastolicBP as the dependent variable.
2. If appropriate for either or both of the ANOVAs, perform post hoc analyses to determine which groups actually differ.
3. Write one paragraph for each ANOVA (be sure to use APA style). At a minimum, each paragraph should contain the three means, three SDâ€™s, ANOVA results (F, df), post hoc tests (if applicable), effect size, and an interpretation of these results.

Your submittal should demonstrate thoughtful consideration of the ideas and concepts that are presented in the course and provide new thoughts and insights relating directly to this topic. Where applicable your submittal should reflect scholarly writing and current APA standards. Review APA Form and Style.