A study was conducted to compare the incubation periods and fledgling periods (in days) of different bird species. Sample data are given below for randomly selected species.
a. Do the incubation and fledgling periods appear to be related?
b. Each of the numbers shown in the table is itself a mean-for the incubation or fledgling periods of an entire species. Suppose the' data gave the incubation and fledgling periods of randomly selected individual birds. Would you expect r to be larger or smaller than you obtained in part (a)? Explain.

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Incubation 23 13 53 23 30 17 78 49 15 12 18 Fledgling3 35 1 360 30S3 28 280 49 7 22 28