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1 . Provide an example of where you could use correlation in real life. Explain why a t-test is necessary before you accept this correlation

1. Provide an example of where you could use correlation in real life. Explain why a t-test is necessary before you accept this correlation as being real in the population.

explain in detail and add reference

2.Compare and contrast Spearman and Pearson correlations.

explain detail with reference !!!

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