| 单词 | average |
| 释义 | average average // adjective, noun, verb
■ adjective
1 calculated by adding several amounts together and dividing the total by the number of amounts: Average earnings are around €35 000 per annum. households with a below-average income
2 typical or normal: Forty hours is a fairly average working week for most people. We can expect above-average financial returns.
■ noun [C,U]
GENERAL AVERAGE, MOVING AVERAGE, PARTICULAR AVERAGE, WEIGHTED AVERAGE
1 the result of adding several amounts together and dividing the total by the number of amounts: The average of 4, 5 and 9 is 6. Food prices have risen by an average of about 5%.
2 a level which is usual: Employees' pay is above average for the industry. ◆ On average, wages have gone up 2%.
3 (Insurance ) = PARTIAL LOSS
WHICH WORD?
mean/median/mode
These words are used to describe different types of averages. Consider the following series of numbers:
4 4 4 5 6 6 7
The mean (also called the arithmetic mean) is calculated by adding all the numbers together and dividing by how many numbers there are: (4+4+4+5+6+6+7)/7 = 5.14
The median can only be found if the numbers are arranged in order of size. It is the number in the middle of the series: 5
The mode is the most common number: 4
■ verb
1 [+ obj] (not used in the passive) to be equal to a particular amount as an average: Economic growth is expected to average 2% next year.
2 [+ obj or no obj] to calculate the average of sth: Earnings are averaged over the whole period.
PHRASAL VERBS
average out to result in an average or equal amount over a period of time or after several occasions: The costs of translation should average out at about €20 per page. Sometimes I have more work and sometimes my colleague does, but over the year it averages out (=results in us having the same amount).
average sth out (at sth) to calculate the average of sth: If you average out the seasonal earnings of a tourist guide, they are similar to those of an office worker.
average out at sth to have a particular amount as the average over a period of time: Sales growth has averaged out at 20% over the last three years. |
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