Answered: n why they are different. There is…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Related questions

Question

100%

Mercury is a persistent and dispersive environmental contaminant found in many ecosystems around the world. When released as an industrial by-product, it often finds its way into aquatic systems where it can have deleterious effects on various avian and aquatic species. The accompanying data on blood mercury concentration (µg/g) for adult females near contaminated rivers in a state was read from a graph in an article.

0.20	0.23	0.26	0.30	0.35	0.41	0.54	0.57
1.43	1.70	1.84	2.20	2.24	3.08	3.26

(a) Determine the values of the sample mean and sample median. [Hint: Σx_i = 18.61.] (Round your answers to four decimal places.)

x = ?

Explain why they are different.

There is heavy positive skewness in the data.

They aren't different since the data is symmetric.

There are an odd number of data values.

There is heavy negative skewness in the data.

The sample mean and sample median are never equal.

(b) Determine the value of the 10% trimmed mean. (Round your answer to four decimal places.)

Compare to the mean and median.

It is below both the mean and median.

It is above both the mean and the median.

It is between the values of the mean and median.

It is the same as the mean.

It is the same as the median.

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.

Expert Solution