First slide

Introduction to statistics

Question

For a symmetrical distribution $Q_{1} = 20$ and $Q_{3} = 40$ .The value of $50^{t h}$ percentile, is

Moderate

Solution

We have
$P_{50} =$ Median $= \frac{Q_{3} + Q_{1}}{2} = \frac{40 + 20}{2} = 30$

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