Why would you not feel comfortable computing a Pearson correlation on the data in Exercise 9.10? Exercise

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Why would you not feel comfortable computing a Pearson correlation on the data in Exercise 9.10?

Exercise 9.10

Down syndrome is another problem that psychologists deal with. It has been proposed that mothers who give birth at older ages are more likely to have a child with Down syndrome. Plot the data below relating age to incidence. The data were taken from Geyer (1991).image text in transcribed

Plot a scatter diagram for the percentage of Down8 syndrome cases (Down / Births) as a function of age.

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