a) Determine the mean reduction in Blood pressure for subjects on a daily exercise program.b) Determine the median reduction in Blood pressure for subjects with no exercise program.c) Determine the mean reduction in Blood pressure for subjects on a weekly exercise programChoose the correct option a) 1.85b) 8.60c) 9.05d) 11.20e) 16.05f) 16.55g) 18.00h) 18.01i) 21.60j) 23.25 In a study to investigate the effect of regular physical exercise on the reduction ofhigh blood pressure in males aged 60-65, the researchers selected at random asample of n, = 12 males suffering from high blood pressure in the given age groupand for a two-year period placed the subjects on a daily physical exercise program.A second sample of n, = 12 males suffering from high blood pressure in the givenage group was selected and again for the two-year period this group of subjectswere placed on a physical exercise program for which they were required toperform only once a week. Finally a third sample of n, =12 males suffering fromhigh blood pressure in the given age group was selected. No exercise programwas required for individuals in sample three. At the end of the two-year period thereduction in blood pressure was measured for each of the subjects in the study andis presented in the table on the next page.Table V.1: Reduction in Blood pressure for three groups ofmales aged 60-65 initially suffering from high blood pressure.ExerciseDailyWeeklyNo21.215.75.615.618.5-5.74.529.0-14.832.017.44.920.46.78.612.211.418.611.24.1-7.930.923.515.210.415.1-2.323.75.8-8.922.825.7-1.211.219.78.6Er 216.1192.620.7Er? 4697.433786.641180.17

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MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

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a) Determine the mean reduction in Blood pressure for subjects on a daily exercise program.

b) Determine the median reduction in Blood pressure for subjects with no exercise program.

c) Determine the mean reduction in Blood pressure for subjects on a weekly exercise program

Choose the correct option

a) 1.85
b) 8.60
c) 9.05
d) 11.20
e) 16.05
f) 16.55
g) 18.00
h) 18.01
i) 21.60
j) 23.25

In a study to investigate the effect of regular physical exercise on the reduction of
high blood pressure in males aged 60-65, the researchers selected at random a
sample of n, = 12 males suffering from high blood pressure in the given age group
and for a two-year period placed the subjects on a daily physical exercise program.
A second sample of n, = 12 males suffering from high blood pressure in the given
age group was selected and again for the two-year period this group of subjects
were placed on a physical exercise program for which they were required to
perform only once a week. Finally a third sample of n, =12 males suffering from
high blood pressure in the given age group was selected. No exercise program
was required for individuals in sample three. At the end of the two-year period the
reduction in blood pressure was measured for each of the subjects in the study and
is presented in the table on the next page.
Table V.1: Reduction in Blood pressure for three groups of
males aged 60-65 initially suffering from high blood pressure.
Exercise
Daily
Weekly
No
21.2
15.7
5.6
15.6
18.5
-5.7
4.5
29.0
-14.8
32.0
17.4
4.9
20.4
6.7
8.6
12.2
11.4
18.6
11.2
4.1
-7.9
30.9
23.5
15.2
10.4
15.1
-2.3
23.7
5.8
-8.9
22.8
25.7
-1.2
11.2
19.7
8.6
Er 216.1
192.6
20.7
Er? 4697.43
3786.64
1180.17

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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