the mean of the heights of 6 girls is 148 cm. if the individual heights of 5 of them are142cm,154cm,146cm,145cm and 150cm,find the heights of the sixth girl.
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Mean =(sum of observations)/total number of observations.
let the height of 6th girl be x.
according to question-
mean=148 total no. of observations=6
sum of total observations=142+154+146+145+150+x=732
148=(732+x)/6
x=(148*6)-732
x=156
let the height of 6th girl be x.
according to question-
mean=148 total no. of observations=6
sum of total observations=142+154+146+145+150+x=732
148=(732+x)/6
x=(148*6)-732
x=156
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