| 释义 |
median
medianrelating to the middle: a median strip in a highway; a midpoint, line, or plane: The median cost of a home is higher than ever.
Not to be confused with:medium – about halfway between extremes: The shirt was a size medium.; an agency by which something is conveyed: the medium of television mediantop:three medians of a triangle and the median of a trapezoidbottom: highway medianme·di·an M0189200 (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. The dividing area, either paved or landscaped, between opposing lanes of traffic on some highways. Also called regionally boulevard, mall, median strip, meridian, neutral ground.3. Statistics The middle value in a distribution, above and below which lie an equal number of values.4. 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.
[Latin mediānus, from medius, middle; see medhyo- in Indo-European roots.]
me′di·an·ly adv.median (ˈmiːdɪən) adj1. of, relating to, situated in, or directed towards the middle2. (Biology) biology of or relating to the plane that divides an organism or organ into symmetrical parts3. (Statistics) statistics of or relating to the mediann4. a middle point, plane, or part5. (Mathematics) geometry a. a straight line joining one vertex of a triangle to the midpoint of the opposite side. See also centroidb. a straight line joining the midpoints of the nonparallel sides of a trapezium6. (Statistics) statistics the middle value in a frequency distribution, below and above which lie values with equal total frequencies7. (Statistics) statistics the middle number or average of the two middle numbers in an ordered sequence of numbers: 7 is the median of both 1, 7, 31 and 2, 5, 9, l6. 8. (Automotive Engineering) Also called: central reserve (chiefly Brit)Canadian the strip, often covered with grass, that separates the two sides of a highway[C16: from Latin mediānus, from medius middle] ˈmedianly advme•di•an (ˈmi di ən)
adj. 1. pertaining to a plane that divides something into two equal parts, esp. one that divides an animal into right and left halves. 2. situated in or pertaining to the middle; medial. n. 3. the middle number in a given sequence of numbers, or the average of the middle two numbers when the sequence has an even number of numbers: 4 is the median of 1, 3, 4, 8, 9. 4. a straight line from a vertex of a triangle to the midpoint of the opposite side. 5. Also called midpoint. a vertical line that divides a histogram into two equal parts. 6. Also called me′dian strip′. a paved or landscaped strip set in the middle of a road to separate opposing lanes of traffic. [1535–45; < Latin mediānus; see medium, -an1] me′di•an•ly, adv. Me•di•an (ˈmi di ən)
adj. 1. of or pertaining to Media or the Medes. n. 2. Mede. [1595–1605] me·di·an (mē′dē-ən)1. In a sequence of numbers arranged from smallest to largest:a. The middle number, when such a sequence has an odd number of values. For example, in the sequence 3, 4, 14, 35, 280, the median is 14.b. The average of the two middle numbers, when such a sequence has an even number of values. For example, in the sequence 4, 8, 10, 56, the median is 9 (the average of 8 and 10). Compare arithmetic mean, average, mode.2. A line joining a vertex of a triangle to the midpoint of the opposite side.Thesaurus| Noun | 1. | median - the value below which 50% of the cases fallmedian valuestatistics - a branch of applied mathematics concerned with the collection and interpretation of quantitative data and the use of probability theory to estimate population parametersaverage, norm - a statistic describing the location of a distribution; "it set the norm for American homes" | | Adj. | 1. | median - relating to or constituting the middle value of an ordered set of values (or the average of the middle two in a set with an even number of values); "the median value of 17, 20, and 36 is 20"; "the median income for the year was $15,000"averagestatistics - a branch of applied mathematics concerned with the collection and interpretation of quantitative data and the use of probability theory to estimate population parametersnormal - conforming with or constituting a norm or standard or level or type or social norm; not abnormal; "serve wine at normal room temperature"; "normal diplomatic relations"; "normal working hours"; "normal word order"; "normal curiosity"; "the normal course of events" | | 2. |  median - dividing an animal into right and left halvesmedialmesial - being in or directed toward the midline or mesial plane of the body | | 3. | median - relating to or situated in or extending toward the middlemedialcentral - in or near a center or constituting a center; the inner area; "a central position" |
medianadjective middle, mid, halfway, medial The median mark is 7.medianadjective1. At, in, near, or being the center:center, central, medial, mid, middle.2. Not extreme:central, intermediate, mean, medial, mid, middle, middle-of-the-road, midway.noun1. A point or an area equidistant from all sides of something:center, middle, midpoint, midst.2. Something, as a type, number, quantity, or degree, that represents a midpoint between extremes on a scale of valuation:average, mean, medium, norm, par.TranslationsIdiomsSeemediamedian
median. 1 In statistics, a type of averageaverage,
number used to represent or characterize a group of numbers. The most common type of average is the arithmetic mean. See median; mode.
..... Click the link for more information. . In a group of numbers as many numbers of the group are larger than the median as are smaller. In the group 4, 5, 6, 9, 13, 14, 19, the median is 9, three numbers being larger and three smaller. When there is an even number of numerals in the group, the median is usually defined as the number halfway between the middle pair. 2 In geometry, the line segment connecting any vertex of a triangle to the midpoint of the opposite side; the three medians of a triangle intersect in a single point, called the median point, or centroid. The median of a trapezoid is the line segment connecting the midpoints of the nonparalled opposite sides.median see MEASURES OF CENTRAL TENDENCY.Median in geometry, the line segment joining a vertex of a triangle to the midpoint of the opposite side. The three medians of a triangle are concurrent. Their common point is called the centroid of the triangle. The centroid of a triangle cut out of material of uniform density is the center of gravity. It is also the center of gravity of a system of three equal masses situated at the vertices of the triangle. The medians of a triangle divide one another in the ratio 2:1 reckoning from the vertex to the base.
Median in probability theory, one of the characteristics of the distribution of values of a random variable. For a random variable X with continuous distribution function F(x), the median m is defined as the root of the equation 
The random variable X assumes values larger than m with probability ½ and values smaller than m with the same probability. In mathematical statistics, the median of an ordered sequence of n quantities x1 ≤ x2 ≤ • • • ≤ xn is either xk, if n is odd and equal to 2k + 1, or (xk + xk+1)/2, if n is even and equal to 2k. As an estimate of the median for independent observations of a random variable X, we take the median of the ordered sequence constructed from the results of the observations. median[′mē·dē·ən] (mathematics) Any line in a triangle which joins a vertex to the midpoint of the opposite side. The line that joins the midpoints of the nonparallel sides of a trapezoid. Also known as midline. (science and technology) Located in the middle. (statistics) An average of a series of quantities or values; specifically, the quantity or value of that item which is so positioned in the series, when arranged in order of numerical quantity or value, that there are an equal number of items of greater magnitude and lesser magnitude. median1. Biology of or relating to the plane that divides an organism or organ into symmetrical parts 2. Geometrya. a straight line joining one vertex of a triangle to the midpoint of the opposite side b. a straight line joining the midpoints of the nonparallel sides of a trapezium 3. Canadian the strip, often covered with grass, that separates the two sides of a highway median
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 distribution" >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): medianus2. 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 - (of a structure or character) describing a location along the line of bilateral symmetry
- (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. median
MedianIn a data set, the value that half the data points fall below and half the data points fall above. It is used along with the mean; it is not as influenced by extreme values as the mean.medianThe middle number of a series. See also mean, which includes examples. See MED
See MEDmedian
Related to median: standard deviationSynonyms for medianadj middleSynonymsSynonyms for medianadj at, in, near, or being the centerSynonyms- center
- central
- medial
- mid
- middle
adj not extremeSynonyms- central
- intermediate
- mean
- medial
- mid
- middle
- middle-of-the-road
- midway
noun a point or an area equidistant from all sides of somethingSynonyms- center
- middle
- midpoint
- midst
noun something, as a type, number, quantity, or degree, that represents a midpoint between extremes on a scale of valuationSynonymsSynonyms for mediannoun the value below which 50% of the cases fallSynonymsRelated Wordsadj relating to or constituting the middle value of an ordered set of values (or the average of the middle two in a set with an even number of values)SynonymsRelated Wordsadj dividing an animal into right and left halvesSynonymsRelated Wordsadj relating to or situated in or extending toward the middleSynonymsRelated Words |