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Find semi-interquartile range from the f...

Find semi-interquartile range from the following :

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`Q = (Q_(3) - Q_(1))/(2)`
`Q_(3) = 68*89`
`Q_(1) = 34*12`
`Q = (68*89 - 34*12)/(2)`
= `(34*77)/(2) = 17* 385 ` marks
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