state the formula to find median for a grouped data and explain the terms
Answers
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The formula for median in a grouped data is median=l+(n2−cff)×h, where l represent the lower limit of the median class, n represents the total sum of all frequencies, cf represent the cumulative frequency before the median class, f represent the frequency of the median class and h represents the class width.
Step-by-step explanation:
The formula for median in a grouped data is median=l+(n2−cff)×h. , where l. represent the lower limit of the median class, n. represents the total sum of all frequencies, cf. represent the cumulative frequency before the median class, f.
The median tells you where the middle of a data set is. ... The median formula is {(n + 1) ÷ 2}th, where “n” is the number of items in the set and “th” just means the (n)th number. To find the median, first order the numbers from smallest to largest.
Formula to obtain Median Class, is \frac{Total number of frequencies + 1}{2} So, Median Class = \frac{20+1}{2} = 10.5. Hence the Median class of 10.5 lies between the intervals 10.5 – 13.5.
Answer:
Median means the middle number.
First arrange the data in ascending order.
If the number of data is odd, (for example 5), add one in it, (in this case make it 6) to make it even and divide by two, ( in this case, make it 3). So take the 3rd data from the group.
But if it is even, directly divide the digits by two after arranging in ascending order. And take that number of data from group.