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The sum of deviations of n observations about 25 is 25 and the sum of deviations of the same n observations about 35 is −25. The mean of observations.​
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The sum of deviations of n observations about 25 is 25 and the sum of deviations of the same n observations about 35 is −25. The mean of observations.​

The sum of deviations of n observations about 25 is 25 and the sum of deviations of-example-1
User Venkatesh G
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Answer:

30

Explanation:

please refer to the attachment above

The sum of deviations of n observations about 25 is 25 and the sum of deviations of-example-1
User Rbaskam
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