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What is the outlier in the following set of numbers: 28, 31, 40, 26, 38, 65, 39, 35, 30?
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Step 1
I'll solve this step-by-step using statistical methods to identify the outlier.

Step 2
: Calculate the Mean

\bar{x} = \frac{28 + 31 + 40 + 26 + 38 + 65 + 39 + 35 + 30}{9} = \frac{332}{9} = 36.89
First, I'll find the average of the dataset.

Final Answer

65 is the outlier in the dataset.

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