Mean of 6 number is 17 .it was found out later than 21 was wrongly written as 12.find the correct mean of the observation
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let the sum of no. be x
then,
17 =x/6
x = 102
now,
new mean be X
X = x -12+21 /6
X = 102+21-12 /6
X = 123-12 /6
X = 111 /6
Plz mark as brainliest
then,
17 =x/6
x = 102
now,
new mean be X
X = x -12+21 /6
X = 102+21-12 /6
X = 123-12 /6
X = 111 /6
Plz mark as brainliest
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