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12.A dataset in our book contains information about 53 Florida lakes. Two quantities recorded are the aver- age mercury level (ppm) in fish taken from
12.A dataset in our book contains information
about 53 Florida lakes. Two quantities recorded are the aver-
age mercury level (ppm) in fish taken from a lake and acidity
(pH) of the lake. Recall that in Chapter 2.5 and 2.6 we learned
how to visualize and summarize the relationship between two
quantitative variables such as these. StatKey provides the
following scatterplot and summary information.
n=53, r= -0.575, slope= -0.152, intercept= 1.531
- What statistic do we use to measure the strength of a linear relationship between two variables? Using appropriate notation, state its value for this sample.
- What corresponding parameter are we interested in investigating? Use appropriate notation.
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