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单词 median
释义
median
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adjn

Median means middle. When a strip of grass divides one direction of a highway from another, it's called a median because it runs through the middle.
Median comes from the Latin word medius, which also means middle. In math, the median is a number in the middle of a list. In the set 2, 3, 5, 10, 25, the median is 5. The statistical median is often linked to the idea of an average. A town's average income might seem high if there are two extremely rich people who live there. The median will tell you the income of the person halfway through the list.
CHOOSE YOUR WORDS
mean / median / average

Wordsmiths sometimes dislike numbers, or at least have a hard time grasping them. These words offer us an opportunity to better understand numbers and use their terms more precisely in writing and speaking.

Let's say we have a set of numbers:

  • 11
  • 23
  • 30
  • 47
  • 56

The mean, sometimes called the arithmetic mean, of this set is 33. The mean is the sum of all the numbers in the set (167) divided by the amount of numbers in the set (5).

The median is the middle point of a number set, in which half the numbers are above the median and half are below. In our set above, the median is 30. But what if your number set has an even number of, er, numbers:

  • 11
  • 23
  • 30
  • 47
  • 52
  • 56

To calculate the median here, add the two middle numbers (30 + 47) and divide by 2. The median for our new list is 38.5.

So far, so good. But what about average? The average of a set of numbers is the same as its mean; they're synonyms.

Let's see our terms in action:

Performance is calculated by the arithmetic mean of the returns in an equally weighted portfolio of individual stocks, on a quarterly basis.

The median single-family homeowner in town will pay $175 more in property taxes this year.

Average retail gas prices in California fell 1.3 cents in the last week, putting the average tank of gas at $3.13 per gallon.

While we wordy types may still struggle to understand what an "equally weighted portfolio" is, wonder whether we are median single-family homeowners, or continue to look for lower-than-average gas prices, at least we know how the mean, median, and average were calculated.

WORD FAMILY
median: medians
USAGE EXAMPLES
Median home prices in Washington soared to record highs last year.
New York Times(Jan 01, 2017)
Montes says Gallon lost control of her car, crossed a median and drove into oncoming traffic.
Washington Times(Dec 30, 2016)
Romney–Clinton counties were especially affluent, though, with a median home price above $300,000 — twice that of the typical county carried by Trump.
Washington Post(Dec 29, 2016)
1adj relating to or situated in or extending toward the middle
Syn
medial
central
in or near a center or constituting a center; the inner area
2adj 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
Syn
average
normal
conforming with or constituting a norm or standard or level or type or social norm; not abnormal
3adj dividing an animal into right and left halves
Syn
medial
mesial
being in or directed toward the midline or mesial plane of the body
4n the value below which 50% of the cases fall
Syn|Hyper
median value
average, norm
a statistic describing the location of a distribution
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更新时间:2025/2/3 11:20:50