The mean height of 10 student is 152cm. the mean height of these student and the teacher is 154 cm then find the height of the teacher
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Total height of 15 students =∑x=154×15=2310cm
It was found that 175cm was wrongly read as 145
Correct sum =2310−145+175=2340cm
Correct mean =
15
2340
=156cm
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