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Descriptive Statistics

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I need help (step-by-step) with the following example exercises (please see attached). These examples are used to help us prepare for the the types of problems that will be on our final. I am not good in math (especially statistics) and hope that someone can help break these answers down in laymens terms.

Thanks,

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Solution Summary

Step by step method for computing descriptive statistics are given in the answer.

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