Let the sample mean of a set of 20 data points be 30. If it is discovered that a data point having value 25 was incorrectly entered as 15, what should be the revised value of the sample mean?
Answers
Answered by
3
Answer:
25
Step-by-step explanation:
Answered by
4
Answer:
30.5
Step-by-step explanation:
the change is 25-15 , that is 10
10/20 = 0.5
added to original value.
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