DEFINITION of 'Quintiles'

A statistical value of a data set that represents 20% of a given population. The first quartile represents the lowest fifth of the data (1-20%); the second quartile represents the second fifth (21% - 40%) etc.


Quintiles are often used to create cut-off points for a given population. For example, a government sponsored socio-economic study may use quintiles to determine the maximum wealth a family could possess in order to belong to the lowest quintile of society. This cut-off point can then be used as a prerequisite for a family to receive a special government subsidy aimed to help society's less fortunate.

  1. Variance

    The spread between numbers in a data set, measuring Variance ...
  2. Standard Deviation

    1. A measure of the dispersion of a set of data from its mean. ...
  3. Statistics

    A type of mathematical analysis involving the use of quantified ...
  4. Mean

    The simple mathematical average of a set of two or more numbers. ...
  5. Sampling

    A process used in statistical analysis in which a predetermined ...
  6. Quartile

    A statistical term describing a division of observations into ...
Related Articles
  1. Economics

    Why The Consumer Price Index Is Controversial

    Find out why economists are torn about how to calculate inflation.
  2. Fundamental Analysis

    Using Decision Trees In Finance

    A decision tree provides a comprehensive framework to review the alternative scenarios and consequences a decision may lead to.
  3. Economics

    Understanding Tragedy of the Commons

    The tragedy of the commons describes an economic problem in which individuals try to reap the greatest benefits from a given resource.
  4. Fundamental Analysis

    Return on Investment (ROI) Vs. Internal Rate of Return (IRR)

    Read about the similarities and differences between an investment's internal rate of return (IRR) and its return on investment (ROI).
  5. Economics

    Current Probability of Donald Trump as President

    Predict the current odds of a Donald Trump presidency, and understand the factors that have kept him on top and the looming challenges he faces.
  6. Investing Basics

    Understanding the Random Walk Theory

    The random walk theory states stock prices are independent of other factors, so their past movements cannot predict their future.
  7. Investing Basics

    A Simplified Approach To Calculating Volatility

    Volatility is sometimes greater than anticipated, but the way it’s measured can compound the problems that occur when it’s unexpected.
  8. Investing Basics

    Why Blue Chip Stocks Are Key to Buy-and Hold Investing

    Several blue chip stocks have proven that buy-and-hold investing still works, even after the huge declines of the Great Recession.
  9. Mutual Funds & ETFs

    Are Your ETFs Too Risky? Learn How to Evaluate Them

    Learn how to identify ETFs with greater risk and volatility. See why some investors include higher volatility ETFs in pursuit of greater returns.
  10. Economics

    Calculating the Arithmetic Mean

    The arithmetic mean is the average of a sum of numbers.
  1. Is Colombia an emerging market economy?

    Colombia meets the criteria of an emerging market economy. The South American country has a much lower gross domestic product, ... Read Full Answer >>
  2. What assumptions are made when conducting a t-test?

    The common assumptions made when doing a t-test include those regarding the scale of measurement, random sampling, normality ... Read Full Answer >>
  3. What are some of the more common types of regressions investors can use?

    The most common types of regression an investor can use are linear regressions and multiple linear regressions. Regressions ... Read Full Answer >>
  4. What types of assets lower portfolio variance?

    Assets that have a negative correlation with each other reduce portfolio variance. Variance is one measure of the volatility ... Read Full Answer >>
  5. When is it better to use systematic over simple random sampling?

    Under simple random sampling, a sample of items is chosen randomly from a population, and each item has an equal probability ... Read Full Answer >>
  6. What are some common financial sampling methods?

    There are two areas in finance where sampling is very important: hypothesis testing and auditing. The type of sampling methods ... Read Full Answer >>

You May Also Like

Hot Definitions
  1. Black Friday

    1. A day of stock market catastrophe. Originally, September 24, 1869, was deemed Black Friday. The crash was sparked by gold ...
  2. Turkey

    Slang for an investment that yields disappointing results or turns out worse than expected. Failed business deals, securities ...
  3. Barefoot Pilgrim

    A slang term for an unsophisticated investor who loses all of his or her wealth by trading equities in the stock market. ...
  4. Quick Ratio

    The quick ratio is an indicator of a company’s short-term liquidity. The quick ratio measures a company’s ability to meet ...
  5. Black Tuesday

    October 29, 1929, when the DJIA fell 12% - one of the largest one-day drops in stock market history. More than 16 million ...
  6. Black Monday

    October 19, 1987, when the Dow Jones Industrial Average (DJIA) lost almost 22% in a single day. That event marked the beginning ...
Trading Center