Q. 64.5( 11 Votes )

# Let us find the median of length of diameter from the following frequency distribution table of length of diameter of pipe.

Answer :

To find out median, we need to calculate cumulative frequency for the given data.

Let us make a table for that.

Here, n = 80, that is, n = even.

Since, n is even, median can be found out as:

⇒

⇒ Median = The mean of 40^{th} and 41^{th} observations

And we know that, 40^{th} observation = 22 [∵ 40 comes between 33 and 57]

And 41^{th} observation = 22 [∵ 41 comes between 33 and 57]

Median = Mean of 22 and 22

⇒

⇒

⇒ Median = 22

**Thus, median = 22.**

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Let us find the median.

West Bengal Board - Mathematics

Let us find the median of length of diameter from the following frequency distribution table of length of diameter of pipe.

West Bengal Board - Mathematics

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West Bengal Board - Mathematics