Squared deviation
Given the data from the problem (sample data: 23, 27, 35, 44), find the sum of the squared deviations (the numerator of the fraction under the square root in the formula). In finding the number, round all calculations to 2 decimals (if you carry more or fewer, your answer may need to be corrected on this system).
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You need to know the following knowledge to solve this word math problem:
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