The mean of 15 observation is 38.2 it was found later on that the number 25 was misread as 52 find the actual mean
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Answer:
mean = ∑x /n
38 = ∑x/15
38*15 = ∑x
∑x = 570 = incorrect value
correct value = 570 - 52 + 25
= 543
correct mean = 543/15
= 36.2
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