The average height of 10 students in a class was calculated as 166 cm. on verification it was found that one reading was wrongly recorded 160cm instead of 150cm. Find the correct mean height.
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Answered by
2
16 cm mean height correct wrong.
Answered by
8
Step-by-step explanation:
Here,
x
ˉ
=166cm and n=10
We have
x
ˉ
=
n
∑x
=
10
∑x
i.e 166=
10
∑x
or ∑x=1660
The incorrect ∑x=1660
The correct ∑x= incorrect ∑x− the wrong value + correct value
=1660−160+150=1650
Hence, the correct A.M. =
10
1650
=165cm.
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