Which type of ogive curve would be best suitable to determine the median?

For less than type ogive type L , for more than type ogive type M

$\begin{matrix} T i m e & T o t a l N u m b e r o f Q u e s t i o n s < 10 & 2 < 20 & 5 < 30 & 10 < 40 & 15 < 50 & 17 < 60 & 25 \end{matrix}$

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Solution

Observe the time column of the table. Since all the data points in time column are given in less than format, the best suited option would be draw a less than type ogive curve. You can also construct a more than type ogive and find the median which would be different from that obtained by the less than type. The more than type ogive will not be very accurate as the distribution of data can be uniform or non-uniform, which is unknown hence this is not a good alternative.

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Similar questions

For determining median from ogive curves ,

S1 : one can use less than type curve.

S2 : one can use more than type curve.

C.I.	20 - 30	30-40	40-50	50-60	60-70	70-80	80-90
Frequency	8	12	24	6	10	15	25

The ogive curve for less than type is a plot of

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