In a study of a new anti-hypertensive medication, systolic blood pressures are measured at baseline. The data are as follows:120112138145135150145163148128143156160142150Compute the sample mean.Compute the sample median.Compute the sample standard deviation.Compute the sample range.Are there any outliers? Justify.

Answered: are measured at baseline. The data are…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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In a study of a new anti-hypertensive medication, systolic blood pressures are measured at baseline. The data are as follows:

120	112	138	145	135
150	145	163	148	128
143	156	160	142	150

Compute the sample mean.
Compute the sample median.
Compute the sample standard deviation.
Compute the sample range.
Are there any outliers? Justify.

Definition Definition Middle value of a data set. The median divides a data set into two halves, and it also called the 50th percentile. The median is much less affected by outliers and skewed data than the mean. If the number of elements in a dataset is odd, then the middlemost element of the data arranged in ascending or descending order is the median. If the number of elements in the dataset is even, the average of the two central elements of the arranged data is the median of the set. For example, if a dataset has five items—12, 13, 21, 27, 31—the median is the third item in ascending order, or 21. If a dataset has six items—12, 13, 21, 27, 31, 33—the median is the average of the third (21) and fourth (27) items. It is calculated as follows: (21 + 27) / 2 = 24.

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