BPchange: change in blood pressure relative to the start of the experiment.The data set contains 60 rows (5 rabbits measured 12 times) of the following 5 variables: The purpose was to test whether blood pressure changes were dependent on activation of serotonin receptors. Thus each rabbit’s blood pressure was measured 12 times, 6 each for treatment and control.Change in blood pressure was measured as the outcome.After injection of treatment or control drug, each rabbit was injected with 6 ascending doses of phenylbiguanide, which raises blood pressure as a function of its dose.5 rabbits were each treated with both saline (control) and serotonin receptor antagonist (blocker) “MDL 72222”. The Rabbit data set describes an experiment where: Run data(Rabbit) and then str(Rabbit) to look at the structure of Rabbit and to bring it into the RStudio Environment. To practice using the elements of the grammar of graphics, we will begin with the idea of the what we want to display, and step-by-step, we will add to and adjust the graphic until we feel it is ready to share with an audience.įor our next graph, we will be visualizing the data in the Rabbit data set, also loaded with the MASS package.
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