The relationship between the cost of a taxi ride (y) and the length of ride (x) is analyzed and is determined to be linear. The mean length was 3.9 miles with a standard deviation of 0.8 mile(s). The mean cost was $9.49 with a standard deviation of $1.7. The equation of the regression model is: �'=2.53+ 1.79 xExplain in context what the number 1.79 in the regression model means.Explain in context what the number 2.53 in the regression model means.You take a cab ride for 6 miles. What is the predicted charge using the regression model?Then the driver charges you $15. Did you over- or under- estimate the charge? If so, how much did you over- or under- estimate?Given the standard deviation of your cost var

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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

Problem 1P

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The relationship between the cost of a taxi ride (y) and the length of ride (x) is analyzed and is determined to be linear. The mean length was 3.9 miles with a standard deviation of 0.8 mile(s). The mean cost was $9.49 with a standard deviation of $1.7. The equation of the regression model is: �'=2.53+ 1.79 x

Explain in context what the number 1.79 in the regression model means.
Explain in context what the number 2.53 in the regression model means.
You take a cab ride for 6 miles. What is the predicted charge using the regression model?
Then the driver charges you $15. Did you over- or under- estimate the charge? If so, how much did you over- or under- estimate?
Given the standard deviation of your cost var

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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