Answered: Delays in discharges from immediate…

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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Delays in discharges from immediate health care facilities create unnecessary risks of expenses for patients and their families. Discharge delays (in days) from two healthcare facilities are shown in the following table. Assume that these data represent SRSs from their respective populations and that the populations demonstrate no major departure from normality. Facility A 12 9 13 16 7 19 20 16 15 14 12 16 facility B 7 10 13 15 9 15 12 16 8 9 6 12 a. Find the mean, median, variance and standard deviation of delays times for Facility A. b. Find the mean, median, variance and standard deviation of delays times for Facility B. c. Compare delays times in the facilities and test whether there was significant difference in mean delay times? Use alpha=0.05

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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