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Subjects
Mathematics State Board
Class 7
Statistics
Arithmetic mean
10.
Four mark exercise problems IV
Exercise condition:
4
m.
Arithmetic mean
of \(15\) observations was calculated as \(85\). If doing so an observation was wrongly taken as \(73\) for \(28\). What would be
correct mean
?
Answer:
Correct mean
\(=\)
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