expectancy
statistical expected length of life
The average time that people or things like this are expected to live or last, usually shown as a number of years.
[type] expectancy of [someone/something]
- Life expectancy has increased dramatically over the last hundred years.
- In many countries, female life expectancy is higher than male life expectancy.
- Doctors explained that his life expectancy would be shorter without treatment.
- The report compares the life expectancy at birth in different regions.
- Improved sanitation and vaccines helped raise global life expectancy.
- The life expectancy in that country is about 80 years.
- Women usually have a higher life expectancy than men.
- Better food and clean water can increase life expectancy.
- The chart shows the life expectancy of different groups of people.
state of anticipation or expectation
A strong feeling of waiting for something to happen.
in [adjective] expectancy
- The crowd waited in tense expectancy as the winner was announced.
- There was a buzz of expectancy in the room before the band came on stage.
- She opened the letter with a feeling of nervous expectancy.
- A hush of expectancy fell over the audience as the lights dimmed.
- His eyes shone with eager expectancy when he saw the wrapped boxes.
- The children watched the door in eager expectancy.
- There was a feeling of expectancy before the show started.
- She waited in quiet expectancy for his answer.
- The room was silent, full of expectancy.
expected value in statistics
In mathematics and statistics, the average value you expect from many repeated tests of something random.
the expectancy of [a random variable]
- In this game, the expectancy of your winnings is actually negative.
- We calculated the expectancy of the random variable X to be 2.5.
- The insurance company uses loss expectancy to set its premiums.
- If the dice are fair, the expectancy of a single roll is 3.5.
- Risk analysts often compare loss expectancy with the cost of controls.
- The teacher showed us how to find the expectancy of a dice roll.
- In this lottery, the expectancy of profit is very low.
- They used the loss expectancy to plan for future risk.
- We worked out the expectancy of X using a formula.
- Base: expectancy
- Plural: expectancies, expectancy
an air of expectancy
1general feeling of waiting
A strong feeling in a room or group that something is about to happen.
- There was an air of expectancy in the hall before the ceremony began.
- As the curtain rose, an air of expectancy spread through the audience.
average life expectancy
1mean expected lifespan in years
The usual or typical number of years that people in a group are expected to live, found by adding and dividing (the average).
- The average life expectancy in that region is just over 75 years.
- Charts comparing average life expectancy help show health differences between countries.
healthy life expectancy
1years expected in good health
The average number of years people are expected to live in good health, without big health problems or disability.
- In some countries, healthy life expectancy is much lower than total life expectancy.
- Public health policies aim to increase healthy life expectancy, not just how long people live.
life expectancy
1average years people are expected to live
The average number of years that people in a country or group are expected to live.
- Japan has one of the highest life expectancy rates in the world.
- Better healthcare has helped increase life expectancy over the last century.
- The report shows that life expectancy is still rising in most regions.
life expectancy at birth
1expected lifespan of a newborn
The number of years a baby is expected to live, if today’s death rates stay the same.
- Life expectancy at birth has increased in almost every country since 1950.
- The study compares life expectancy at birth for men and women.