Answered: Science Teachers English Teachers 53 52…

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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Science Teachers	English Teachers
53	52
56	47
54	50
54	46
55	47
58	48
49	49
61	46
54	55
54	44
52	47
53
54

7. According to the National Education Association (NEA), teachers generally spend
more than 40 hours each week working on instructional duties. The following data show
the number of hours worked per week for a sample of 13 high school science teachers
and a sample of 11 high school English teachers. (Please refer to the Teachers Data)
a. What is the median number of hours worked per week for the sample of 13 high school
science teachers?
b. What is the median number of hours worked per week for the sample of 11 high school
English teachers?
c. Create a box plot for the number of hours worked for high school science teachers.

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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