Disagreement exists in the literature concerning whether the median should be computed using the ungrouped or grouped equation. For the original unaltered data the median equation for ungrouped data satisfies the criterion that Σ|x — Mdn|min. The median equation for grouped data satisfies this criterion for the linearly interpolated underlying continuous distribution. An equation is given to estimate the underlying distribution. The so-called ungrouped equation can be applied to grouped data. The grouped equation is applied to discrete data for comparative purposes. If the data ate not rectangularly distributed in the class interval of interest, a logarithmic adjustment can be made.
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