Assignment:
Construct a scatterplot, find the value of the linear correlation coefficient r, and find the critical values of r from Table A-6 using ?? =0 .05. Determine whether there is sufficient evidence to support a claim of a linear correlation between the two variables. (Save your work because the same data sets will be used in Section 10-3 exercises.)
Crickets and Temperature One classic application of correlation involves the association between the temperature and the number of times a cricket chirps in a minute. Listed below are the numbers of chirps in 1 min and the corresponding temperatures in F (based on data from The Song of Insects by George W. Pierce, Harvard University Press). Is there a linear correlation between the number of chirps in 1 min and the temperature?
|
Chirps in 1 min
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882
|
1188
|
1104
|
864
|
1200
|
1032
|
960
|
900
|
|
Tempreture (°F)
|
69.7
|
93.3
|
84.3
|
76.3
|
88.6
|
82.6
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71.6
|
79.6
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