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Add up all frequencies or calculate using density.
Median position = n ÷ 2, where n is total frequency.
Sum frequencies until reaching or exceeding median position.
Frequency density = frequency ÷ class width.
Median position = 37 ÷ 2 = 18.5.
Width = (Upper limit - Lower limit) of the class.
Use linear interpolation to estimate the median.
It shows frequency on y-axis of histograms.
Ensure it lies within the identified median class.
Use the formula: L + (n/2 - F) / f * w.
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