(Answered) Question shown here are the us oil refineries with the

Statistics

Question: Shown here are the U.S. oil refineries with the largest capacity in terms of barrels per day according to the U.S. Energy Information Administration. Use these as population data and answer the questions.

a. What are the values of the mean and the median? Compare the answers and state which you prefer as a measure of location for these data and why.

b. What are the values of the range and interquartile range? How do they differ?

c. What are the values of variance and standard deviation for these data?

d. What is the z score for Pascagoula, Mississippi? What is the zscore for Texas City, Texas? Interpret these zscores.

e. Calculate the Pearsonian coefficient of skewness and comment on the skewness of this distribution.

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