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The prices of a barrel of oil in 12 days are: 55, 56, 58, 62, 64, 65, 66, 67, 69, 71, 90, 100. Find the

The prices of a barrel of oil in 12 days are: 55, 56, 58, 62, 64, 65, 66, 67, 69, 71, 90, 100. Find the outlier prices. Explain your result

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