1500 1250 1000 750 6.8 7.2 7.6 8.0 pH BCI

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
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Acid rain Biologists studying the effects of acid rain
on wildlife collected data from 163 streams in the
Adirondack Mountains. They recorded the pH (acidity)
of the water and the BCI, a measure of biological diver-
sity, and they calculated R2 = 27,. Here’s a scatterplot
of BCI against pH:a) What is the correlation between pH and BCI?
b) Describe the association between these two variables.
c) If a stream has average pH, what would you predict
about the BCI?
d) In a stream where the pH is 3 standard deviations
above average, what would you predict about the BCI?
1500
1250
1000
750
6.8
7.2
7.6
8.0
pH
BCI
Transcribed Image Text:1500 1250 1000 750 6.8 7.2 7.6 8.0 pH BCI
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