life expectancy

(noun)

The amount of time one is expected to live.

Related Terms

Examples of life expectancy in the following topics:

  • Global Aging

    • Globally, most countries are seeing the average life expectancy of their populations increase.
    • Economic circumstances are one factor that affects life expectancy.
    • People living in poorer, less developed countries tend to have lower life expectancies.
    • As nations develop, their life expectancy generally rises.
    • Growing life expectancy is not the only factor contributing to global aging.

  • Global Aging Trends

    • Globally, most countries are seeing the average life expectancy of their populations increase.
    • However, the rate at which the world's population is aging is not uniform across countries, and some countries have actually seen decreasing life expectancies, largely as a result of AIDS.
    • The varied life expectancies and younger populations are illustrated in the map below, which depicts the percentage of each country's population that is over 65.
    • The least developed countries are also the youngest countries as life expectancies are substantially lower.

  • Mortality

    • Men and women may have different life expectancies, so mortality rates can vary with the gender distribution of a population.
    • Similarly, men and women may have different life expectancies; therefore, mortality rates can vary with the gender distribution of a population.
    • A life table is necessary to give a good estimate of life expectancy.
    • Overall, developing countries tend to have higher mortality rates, higher infant mortality rates, and lower life expectancies.
    • Explain the various ways mortality is calculated, such as the crude death rate, infant mortality rate and life expectancy

  • Age and Gender

    • For instance, men do engage in riskier behaviors than women, reducing their life expectancy.
    • Another factor that may contribute to the greater life expectancy of women is the different types of jobs men and women tend to have during their lifetimes.
    • This chart depicts the increasing life expectancy at birth in the USA.

  • History

    • Some early mathematicians developed primitive forms of life tables, which are tables of life expectancies, for life insurance and actuarial purposes.

  • The Study of Population Dynamics

    • The key statistics demographers use are birth rates, death rates, and life expectancies; although, in practice, scientists also study immigration and emigration rates, which also affect populations.
    • Life expectancy, another important factor, is the length of time individuals remain in the population.
    • The tables are modeled after actuarial tables used by the insurance industry for estimating human life expectancy.
    • The data indicate that if a sheep in this population were to survive to age one, it could be expected to live another 7.7 years on average, as shown by the life expectancy numbers in column E.
    • This life table of Ovis dalli shows the number of deaths, number of survivors, mortality rate, and life expectancy at each age interval for the Dall mountain sheep.

  • Indefinite-Life Impairment

    • A software company has a trademark valued at $10 million with an indefinite useful life.
    • Under US GAAP, intangible assets are classified into: Purchased vs. internally created intangibles, and Limited-life vs. indefinite-life intangibles.
    • Since intangible assets are typically expensed according to their respective life expectancy, it is important to understand the difference between limited-life intangible assets and indefinite-life intangible assets.
    • Intangible assets with identifiable useful lives (limited-life) include copyrights and patents.
    • Instead of amortization, indefinite-life assets are evaluated for impairment yearly.

  • The Product Life Cycle

    • Product development and product life cycles go hand-in-hand.
    • The product life cycle (PLC) describes the life of a product in the market with respect to business/commercial costs and sales measures.
    • This is not to say that product lives cannot be extended - there are many good examples of this - but rather, each product has a 'natural' life through which it is expected to pass.
    • Products have a limited life and, thus, every product has a life cycle.
    • The product life cycle begins with the introduction stage (see ).

  • Product Life-Cycle Curve

    • A given product may hold a unique product life cycle shape such that use of typical product life cycle models are useful only as a rough guide for marketing management.
    • Facebook is in the mature phase of the product life cycle.
    • No new or obsoleting technology is expected to appear soon which would put Facebook out of business.
    • The iPod touch is currently in the mature phase of the product life cycle.
    • The diagram shows when a product is expected to break even once it is introduced into the market.

  • The bottom line

    • With public expectations about sustainability continually increasing, ‘futureproofing products' is a safe bet.
    • Future-proofing products involves working to insulate products and services from risk and uncertainty by eliminating waste in all phases of a product's life-cycle to: (1) avoid rises in raw material costs, (2) reduce the chances of bad publicity, and (3) prepare for coming changes in environmental legislation.