median

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Related to Medians: Medes, Medians of a triangle

median

 [me´de-an]
1. situated in the median plane or in the midline of a body or structure.
2. any value that divides the probability distribution of a random variable in half; that is, the probability of observing a value above the median and the probability of observing a value below the median are both less than or equal to one-half. For a finite population or sample, the median is the middle value of an odd number of values (arranged in ascending value) or any value between the two middle values of an even number of values; in the latter case it is conventional to use the average of the two middle values.

me·di·an

(mē'dē-ăn),
1. middle; lying in the midline. Synonym(s): medianus
2. The middle value in a set of measurements; like the mean, a measure of central tendency.
[L. medianus, middle]

median

(mē′dē-ən)
adj.
1. Relating to, located in, or extending toward the middle.
2. Anatomy Of, relating to, or situated in or near the plane that divides a bilaterally symmetrical animal into right and left halves; mesial.
3. Statistics Relating to or constituting the middle value in a distribution.
n.
1. A median point, plane, line, or part.
2. Statistics The middle value in a distribution, above and below which lie an equal number of values.
3. Mathematics
a. A line that joins a vertex of a triangle to the midpoint of the opposite side.
b. The line that joins the midpoints of the nonparallel sides of a trapezoid.

me′di·an·ly adv.

median

EBM
The exact middle value in a set of values that has been arranged in order from highest to lowest—i.e., there are as many values greater and less than the median. Where there is an even number of values, the median is designated as halfway between the two middle values.

Statistics
The midpoint of data after being ranked in a distribution, above and below which lie an equal number of values; a measure of central location, which divides a set of data into two equal parts; the data value at rank 0.5 x (n + 1).

The median is a better measure than the mean of the centre of a data distribution when the data are not symmetrically (normally) distributed, as it is not affected as severely as the mean by the outliers and non-symmetry typical of biological data. The median appears as a line in the box of a box-and-whisker plot and divides the middle two quartiles. Medians are compared by non-parametric statistical procedures.

me·di·an

(mē'dē-ăn)
1. Central; middle; lying in the midline.
2. The middle value in a set of measurements; like the mean, a measure of central tendency.

median

1. Situated in or towards the MEDIAN PLANE of the body.
2. In statistics, the middle value when observations are ranked in order of magnitude.

median

  1. (of a structure or character) describing a location along the line of bilateral symmetry
  2. (in statistics), the middle value in a frequency distribution, on either side of which lie values with equal total frequencies.

me·di·an

(mē'dē-ăn)
1. Central; middle; lying in the midline.
2. The middle value in a set of measurements.
References in periodicals archive ?
Quadruple biomarkers (Inh A, hCG, AFP and uE3) results were used to assess median values for normal and healthy population, which would be used in future for calculation of MoM (Multiple of Median) by using formula MoM=Patient result/Lab median, to predict the risk of Down Syndrome.
One of the study by Vranken et al11 in Belgium showed the same set of trends but different values for median, most likely due to large sample size and varied instrumentation used.
In this paper, we consider the median problem under the usual transposition distance (exchanging positions of any two elements).
We give a branch and bound algorithm which computes the transposition median. This algorithm resembles algorithms for the reversal median (4) and the DCJ median (12; 11) and has a comparable running time.
The good news is, regardless of the circumstances of cross-median crashes, research has shown that most of them can be prevented through the installation of a protective median barrier.
The researchers recommended prioritized safety improvements, primarily placement of median barriers, at these locations.
Squires and Parsonson studied 32 sections of routes with raised medians and 50 sections with 2WLTL in Georgia.[13] This major study encompassed over 120 miles of 4- and 6-lane sections with added left turn lanes.
During this period, 840 companies--ranging in size from $250,000 to $193 billion in total assets (median size: $579 million)--disclosed the cumulative effect of changes in principle on their income statements.
The median population of communities in which independent living programs are located is 210,000.
The median sale price trended downwards from $180,000 in the first quarter to $171,500 by year end.
We compare the ability of the NSA-median to track trend inflation against the CPI, the core CPI, and the median CPI.
For condominiums, for the fifth quarter in a row, excluding the Downtown postwar category, all categories surveyed surpassed a median price-per-square foot of $600.