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telo118 [61]
3 years ago
11

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.​

Mathematics
1 answer:
OLga [1]3 years ago
4 0

Answer:

<h2>30 </h2>

Step-by-step explanation:

<h2>please refer to the attachment above</h2>

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