The average height of 40 students is 150cm. it was later detected that one observation 165 cm was wrongly copied as 125 cm for computation of mean. find the correct mean height
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avg ht=total ht/no. if students
150=total ht/40
total ht=6000
correct total ht=6000-125+165=6040
mean=total ht/no. of students=6040/40=151
150=total ht/40
total ht=6000
correct total ht=6000-125+165=6040
mean=total ht/no. of students=6040/40=151
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