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MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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Question is on image and values of 12.2 are on the image with handwriting

Transcribed Image Text:Section 12.2
#12ab
Section 12.5
NT #2
For the following, use the data from the previous problem (#12, Section 12.2)
a) Calculate the value of the sample correlation coefficient. Based on this value, how would you describe
the nature of the relationship between the two variables?
b) If the units of y were changed to g/L, would your answer to part a) change?
c) For the regression model in #12a, what proportion of the observed variation in ammonium concentra-
tion can be attributed to the approximate linear relationship between transpiration and ammonium
concentration?

Transcribed Image Text:22:24 Thu Apr 15
54%
T
+ :
Seutin 12.2
#12 a:) b.)
xo Indiperllint uriable o
tranplation
yo dipindent verñalle g amann
nentetios
no13
Zy:>52.8
Sxy
2-341.95931
Exi o 3027
Sxx> 1885.237069
Syye 77.270769
grosien Ane
Sxy
? -341,959931
1585.237069
-0.2157
Sxx
Exi
E- (3) - C0.a15)/203. 7
13
Po * 4.0615 t 5.0391z9.1006
Gression ine =
i
9.1006-0.2157x
ý when am. concentr is a Sml h
ŷ - 9.1006- 0. Ə157X
Y
9-9.1006-0.21IS7(25)
• 3.708)
3
5
b.) when 45ml ih?
uhy doun't make slense aalcelate?
BC cause it AS isit ün thin merange of trayplation vearicldle
>
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