Answered: Given that a data set has a mean of 40…

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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Question

Given that a data set has a mean of 40 and a standard deviation of 4, find the percent of data within each interval. find the percent of data within each interval. Answers should be rounded to the nearest tenth of a percent.

What percent of the data is below 31?

What percent of the data is above 35?

What percent of the data is between 30 and 34?

What percent of the data is below 38?

What percent of the data is between 32.4 and 33.4?

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Given that a data set has a mean of 40 and a standard deviation of 4, find the percent of data
rounded to the nearest tenth of a percent. What percent of the data is below 31? 1.22%
35?___89.44%____ What percent of the data is between 30 and 34?___6.06%___ What perce
30.85% What percent of the data is between 32.4 and 33.4? 2.08% Note: mak
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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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