Answered: In an analysis of two independent…

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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Question

In an analysis of two independent samples, log transformation has been applied to original data so that t-tools can be used. After transformation, both sample distributions appear to be bell-shaped. The sample mean difference of the log-transformed data between two samples is calculated to be 5.87. Then which of the following quantities should be used to estimate the ratio between population medians of original variables?

(a) 5.87

(b) log(5.87)

(d) 5.87^e

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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