Calculate $Q_{ 1 }$ and $Q_{ 3 }$ from the following data

CBSE Class 11 CBSE Class 11 Economics
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Calculate Q_{ 1 } and Q_{ 3 } from the following data

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Calculation of Q_{ 1 } and Q_{ 3 }

Calculate $Q_{ 1 }$ and $Q_{ 3 }$.png695×241 16.7 KB

Now, Q_{ 1 }= Size of (N+1/4) th item = Size of (51+1/4) th item

= Size of 13th item and it lies in cf 14, hence Q_{ 1 } = 20 marks
Q_{ 3 }= Size of 3(N+1/4) th item = Size of 3 (51+1/4) th item
= Size of 39th item and it lies in cf 42, hence Q_{ 3 } = 40 marks