Following is a list of 21 African nations for which information is available on voter turnout (percentage of the voting age population) for president between 2005 and 2008. Compute and interpret the median and mean percentage turnout. Presidential Voter Turnout, 21 African Countries, 2005–2008 COUNTRY YEAR % Turnout VAP Burkina Faso 2005 36.4 Cape Verde 2006 78.59 Central African Rep. 2005 45.14 Chad 2006 71.4 Comoros 2006 52.14 Djibouti 2005 67.82 Egypt 2005 16.41 Gabon 2005 51.47 Gambia 2006 50.66 GuineaBissau 2005 66.84 Kenya 2007 54.49 Liberia 2005 59.01 Madagascar 2006 50.85 Mali 2007 48.18 Mauritania 2007 53.55 São Tomé and Príncipe 2006 69.76 Senegal 2007 55.11 Seychelles 2006 97.08 Sierra Leone 2007 62.02 Zambia 2008 34.18 Zimbabwe 2008 47.27

Following is a list of 21 African nations for which information is available on voter turnout (percentage of the voting age population) for president between 2005 and 2008. Compute and interpret the median and mean percentage turnout. Presidential Voter Turnout, 21 African Countries, 2005–2008 COUNTRY YEAR % Turnout VAP Burkina Faso 2005 36.4 Cape Verde 2006 78.59 Central African Rep. 2005 45.14 Chad 2006 71.4 Comoros 2006 52.14 Djibouti 2005 67.82 Egypt 2005 16.41 Gabon 2005 51.47 Gambia 2006 50.66 GuineaBissau 2005 66.84 Kenya 2007 54.49 Liberia 2005 59.01 Madagascar 2006 50.85 Mali 2007 48.18 Mauritania 2007 53.55 São Tomé and Príncipe 2006 69.76 Senegal 2007 55.11 Seychelles 2006 97.08 Sierra Leone 2007 62.02 Zambia 2008 34.18 Zimbabwe 2008 47.27

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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Presidential Voter Turnout, 21 African Countries, 2005–2008

COUNTRY YEAR % Turnout VAP

Burkina Faso 2005 36.4 Cape Verde 2006 78.59 Central African Rep. 2005 45.14

Chad 2006 71.4

Comoros 2006 52.14

Djibouti 2005 67.82

Egypt 2005 16.41

Gabon 2005 51.47

Gambia 2006 50.66

GuineaBissau 2005 66.84

Kenya 2007 54.49

Liberia 2005 59.01

Madagascar 2006 50.85

Mali 2007 48.18

Mauritania 2007 53.55

São Tomé and Príncipe 2006 69.76

Senegal 2007 55.11

Seychelles 2006 97.08

Sierra Leone 2007 62.02

Zambia 2008 34.18

Zimbabwe 2008 47.27

Definition Definition Measure of central tendency that is the average of a given data set. The mean value is evaluated as the quotient of the sum of all observations by the sample size. The mean, in contrast to a median, is affected by extreme values. Very large or very small values can distract the mean from the center of the data. Arithmetic mean: The most common type of mean is the arithmetic mean. It is evaluated using the formula: μ = 1 N ∑ i = 1 N x i Other types of means are the geometric mean, logarithmic mean, and harmonic mean. Geometric mean: The nth root of the product of n observations from a data set is defined as the geometric mean of the set: G = x 1 x 2 ... x n n Logarithmic mean: The difference of the natural logarithms of the two numbers, divided by the difference between the numbers is the logarithmic mean of the two numbers. The logarithmic mean is used particularly in heat transfer and mass transfer. ln x 2 − ln x 1 x 2 − x 1 Harmonic mean: The inverse of the arithmetic mean of the inverses of all the numbers in a data set is the harmonic mean of the data. 1 1 x 1 + 1 x 2 + ...

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