We want to investigate the correlation between concentration of Se (Selenium) in the teeth and its concentration in the liver in 20 Beluga 240 220 Whales. We suspect that the higher the concentration in the liver, the higher the concentration in the teeth. A plot of the data is given at right, and the following summary statistics are given for these data: 200 180 160 X = 20.68 Sx = 13.45 ỹ = 156.60 Sy = 36.06 140 r = 0.54 Se = 31.25 120 Before actually computing its value (that is, by just looking at the scatterplot), how do we know that r > 0 (rather than r = 0 or r < 0)? 10 20 30 40 Liver Se (ug/g dry wt) Calculate the regression line Y Tooth Se (variable Y in the line) as a function of Liver Se (variable X in the line). bo + b,X (that is, find the slope b1 and y-intercept bo) for Interpret the value of the slope bị that you just found. That is, what does b, tell you about how Tooth Se and Liver Se are related? (And don't just write that it's the slope.) Tooth Se (ng/g dry wt)

We want to investigate the correlation between concentration of Se (Selenium) in the teeth and its concentration in the liver in 20 Beluga 240 220 Whales. We suspect that the higher the concentration in the liver, the higher the concentration in the teeth. A plot of the data is given at right, and the following summary statistics are given for these data: 200 180 160 X = 20.68 Sx = 13.45 ỹ = 156.60 Sy = 36.06 140 r = 0.54 Se = 31.25 120 Before actually computing its value (that is, by just looking at the scatterplot), how do we know that r > 0 (rather than r = 0 or r < 0)? 10 20 30 40 Liver Se (ug/g dry wt) Calculate the regression line Y Tooth Se (variable Y in the line) as a function of Liver Se (variable X in the line). bo + b,X (that is, find the slope b1 and y-intercept bo) for Interpret the value of the slope bị that you just found. That is, what does b, tell you about how Tooth Se and Liver Se are related? (And don't just write that it's the slope.) Tooth Se (ng/g dry wt)

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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