5.34 Please complete both parts. Do Part (a) "by hand": the mean height of the brothers is 69 inches and the standard deviation is 2.72 inches, the mean height of the sisters is 64 inches and the standard deviation is 2.57 inches, and the correlation is 0.558. Draw the scatterplot by hand. The regression line can be approximate in grade index among the students. What is the numerbetween percent of classes attended and grade index?their classes earneation5.34 Sisters and brothers. How strongly do physical characteristics of sisters and broshers correlate? Here are data on the heights (in inches) of 11 adult pairs:127073 726566Brother 7168 66 67 70 7165626564665962Sister69 64 65 63(a) Use your calculator or software to find the correlation and the equation of theleast-squares line for predicting sister's height from brother's height. Make ascatterplot of the data and add the regression line to your plot.(b) Damien is 70 inches tall. Predict the height of his sister Tonya. Based on thescatterplot and the correlation r, do you expect your prediction to be very ac-curate? Why?5.35 Keeping water clean. Keeping water supplies clean requires regular measurementof levels of pollutants. The measurements are indirect-a typical analysis involvesforming a dye by a chemical reaction with the dissolved pollutant, then passinglight through the solution and measuring its "absorbence." To calibrate such mea-

Answered: ers correlate? Here are data on the…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Related questions

Question

5.34 Please complete both parts. Do Part (a) "by hand": the mean height of the brothers is 69 inches and the standard deviation is 2.72 inches, the mean height of the sisters is 64 inches and the standard deviation is 2.57 inches, and the correlation is 0.558. Draw the scatterplot by hand. The regression line can be approximate

in grade index among the students. What is the numer
between percent of classes attended and grade index?
their classes earne
ation
5.34 Sisters and brothers. How strongly do physical characteristics of sisters and brosh
ers correlate? Here are data on the heights (in inches) of 11 adult pairs:12
70
73 72
65
66
Brother 71
68 66 67 70 71
65
62
65
64
66
59
62
Sister
69 64 65 63
(a) Use your calculator or software to find the correlation and the equation of the
least-squares line for predicting sister's height from brother's height. Make a
scatterplot of the data and add the regression line to your plot.
(b) Damien is 70 inches tall. Predict the height of his sister Tonya. Based on the
scatterplot and the correlation r, do you expect your prediction to be very ac-
curate? Why?
5.35 Keeping water clean. Keeping water supplies clean requires regular measurement
of levels of pollutants. The measurements are indirect-a typical analysis involves
forming a dye by a chemical reaction with the dissolved pollutant, then passing
light through the solution and measuring its "absorbence." To calibrate such mea-

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 + ...

Expert Solution