Calculate mean standard deviation and variance of systolic

Reference no: EM131371616

Assignment: Summarizing Data and Probability

Introduce basic measures of centrality and dispersion that are used to summarize and describe a data set. We use these sample statistics to estimate the true, but unknown, population parameters.

Problem 1:

For the first problem you will need to refer to the following table of blood pressure data collected at a local blood drive.

Blood Pressure Data

Patient ID	Systolic	Diastolic
1	160	110
2	150	90
3	110	60
4	120	80
5	130	70
6	150	90
7	130	80
8	120	60
9	90	40

Using the data in the preceding table to:

• Calculate the mean, median, standard deviation, and variance of the systolic and diastolic blood pressure measurements using the formulas provided in the course text. In your write-up, show the formulas you use to calculate each statistic.

• Create a histogram and box plot for systolic blood pressure and a histogram and box plot for diastolic blood pressure.

• Scan your completed work into an image file and then insert it into a Word document.

• You could also create the histogram and box plot charts with Excel or use the PASS software that came with your text.

• You will then need to copy and paste the output from the Excel or PASS software into the Word document with your work for Problem 2.

Problem 2:

• Briefly interpret the results from Problem 1. Describe what the numerical summary statistics you calculated signify and what the visual displays suggest.

• Do you think the distribution of either systolic or diastolic blood pressure in this sample follows a normal distribution?

• Be sure to include Problem 1 in the same document as Problem 2.

Problem 3:

You were introduced to probability theory and how it allows us to interpret random phenomena. To prepare for this

Assignment, review Chapters 3 and 4 in the course text for examples of how clinicians use probability in research and practice.

To complete this Application Assignment, write a 1-page paper addressing the following:

• Identify two specific ways in which probability is used in clinical research. These may relate, for instance, to relative risk, odds ratio, and number needed to treat.

• Briefly discuss the impact or importance of probability in clinical research and practice.

Reference no: EM131371616

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