First of all, to find the median , the observations are arranged in ascending or descending order.
Formulas for Finding Median:
♣ If number of Observations or n are Odd:
♣ If number of Observations or n are Even:
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locate the class whose cumulative frequency is greater than
is called median class.l = lower limit of median classn = sum of frequencycf = cumulative frequency of class preceding the median classf = frequency of the median classh = class width
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This formula is used to find the median in a group data which is located in the median class. Median, m = L + [ (N/2 – F) / f ]C L means lower boundary of the median class N means sum of frequencies F means cumulative frequency before the median class.
This formula is used to find the median in a grouped data which is located in median class. Median, m = L + [(N/2-F) / f C L means class N means sum of frequencies F means cumulative frequency before the median class... G is the frequency of the median group... w is the group width.
write the formula of median fir grouped data explain the terms in words 4/5