Use the following data obtained from ages of the last six U. S. Presidents at the time of their inauguration to answer the following questions:Ages of Last 6 Presidents at InaugurationRonald Reagan69George Bush64Bill Clinton46George W. Bush54Barack Obama47Donald Trump70 1. Find the mean of the data set. (Round to one decimal place.) 2. Find the standard deviation of the data set. (Do not round until the final answer. Round final answer to 1 decimal place.) 3. What percentage of presidents’ ages fall within one standard deviation of the mean? (Round to 1 decimal place.)

Name: Use the following data obtained from ages of the last six U. S. Presid
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Description: Use the following data obtained from ages of the last six U. S. Presidents at the time of their inauguration to answer the following questions:Ages of Last 6 Presidents at InaugurationRonald Reagan69George Bush64Bill Clinton46George W. Bush54Barack O

Mean: The mean is the sum of observations divided by the number of observations. that is, Mean = x =…

Answered: Use the following data obtained from…

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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Use the following data obtained from ages of the last six U. S. Presidents at the time of their inauguration to answer the following questions:

Ages of Last 6 Presidents at Inauguration
Ronald Reagan	69
George Bush	64
Bill Clinton	46
George W. Bush	54
Barack Obama	47
Donald Trump	70

1. Find the mean of the data set. (Round to one decimal place.)

2. Find the standard deviation of the data set. (Do not round until the final answer. Round final answer to 1 decimal place.)

3. What percentage of presidents’ ages fall within one standard deviation of the mean? (Round to 1 decimal place.)

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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