Question

Write the formula to find the median of a grouped data and explain the alphabet in it

Answer 1

Hi there!

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What is Median?

After arranging the given data in the ascending or descending order of magnitude, the value of the middle most observation, is called the median of the data.

Formula to find the median :)

Method : Arrange the data in increasing or decreasing order of magnitude. Let the total number of observation be n.

(i) If n is odd, then median

⇒ Value of $\mathsf{( \frac{n + 1}{2} )\th}$ observation.

(ii) If n is even, then median

⇒ mean of $\mathsf{( \frac{n}{2} )\th}$ and $\mathsf{( \frac{n}{2} + 1 )\th}$ observations.

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Thanks for the question!

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Answer 2

Answer:

l+(n/2-cf/f)h

Step-by-step explanation:

l=lower boundary of median class

n=no.of observation

cf =cumulative frequency of preceding median class

f= frequency

h=class size