Sample

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Dictionary Says

Definition of 'Sample'

A subset containing the characteristics of a larger population. Samples are used in statistical testing when population sizes are too large for the test to include all possible members or observations. A sample should represent the whole population and not reflect bias toward a specific attribute.
Investopedia Says

Investopedia explains 'Sample'

A sample is a smaller, manageable version of a larger group. For example, if you wanted to test an investment strategy on past stock data, you would have an enormous number of stocks to test. Instead of testing the strategy on every stock, you would use a sample, which allows you to draw statistical insights from a smaller group of stocks. The sample should not contain any bias, such as the survivorship bias, where you might only use stocks that have survived the entire length of time you wish to test. Choosing a sample randomly should eliminate the possibilities of bias.
Search results for

'Sample'

  • Backtesting And Forward Testing: The Importance Of Correlation

    http://www.investopedia.com/articles/trading/10/backtesting-walkforward-important-correlation.asp
    ... Out-of-sample testing and forward performance testing provide further confirmation
    regarding a system's effectiveness, and can show a system's true colors ...

  • Using Historical Volatility To Gauge Future Risk

    http://www.investopedia.com/articles/06/historicalvolatility.asp
    ... the following formula: In the example below, we pulled a sample of Google's
    (NYSE:GOOG) daily closing stock prices. The stock closed ...

  • The Unemployment Rate: Get Real

    http://www.investopedia.com/articles/economics/10/unemployment-rate-get-real.asp
    ... Therefore, the US government conducts a monthly sample survey – known as the Current
    Population Survey (CPS) – to measure the extent of unemployment in the ...

  • Calculating Covariance For Stocks

    http://www.investopedia.com/articles/financial-theory/11/calculating-covariance.asp
    ... The last step is to divide the result by the sample size and subtract one. If it
    was the entire population, then you could just divide by the population size. ...

  • CFP Study Guide - Financial Planning: Process and Rules ...

    http://www.investopedia.com/exam-guide/cfp/financial-planning-process-rules/default.asp
    ... 25.31 Tangible Assets; 25.32 Securities Markets; 25.33 Securities Regulation; 25.34
    Sample Questions 1 - 7; ... 30.4 Sample Questions 1 - 5; 30.5 Answer Key. 31. ...

  • CFP Study Guide - Principles of Risk and Insurance - Introduction ...

    http://www.investopedia.com/exam-guide/cfp/principles-of-risk-and-insurance/default.asp
    ... 25.31 Tangible Assets; 25.32 Securities Markets; 25.33 Securities Regulation; 25.34
    Sample Questions 1 - 7; ... 30.4 Sample Questions 1 - 5; 30.5 Answer Key. 31. ...

  • CFP Study Guide - Principles of Risk and Insurance - The Risk ...

    http://www.investopedia.com/exam-guide/cfp/principles-of-risk-and-insurance/cfp2.asp
    ... 25.31 Tangible Assets; 25.32 Securities Markets; 25.33 Securities Regulation; 25.34
    Sample Questions 1 - 7; ... 30.4 Sample Questions 1 - 5; 30.5 Answer Key. 31. ...

  • CFP Study Guide - Property, Casualty and Liability Insurance ...

    http://www.investopedia.com/exam-guide/cfp/property-casualty-liability-insurance/default.asp
    ... 25.31 Tangible Assets; 25.32 Securities Markets; 25.33 Securities Regulation; 25.34
    Sample Questions 1 - 7; ... 30.4 Sample Questions 1 - 5; 30.5 Answer Key. 31. ...

  • Commodities: Rough Rice | Investopedia

    http://www.investopedia.com/university/commodities/commodities17.asp
    ... A sample commodity futures contract for rough rice is shown in the following table.
    Rice Contract Specifications. Ticker Symbol, Open Outcry: RR Electronic : ZR ...

  • CFA Level 1 Study Guide - Quantitative Methods - Calculating ...

    http://www.investopedia.com/exam-guide/cfa-level-1/quantitative-methods/confidence-intervals-calculations.asp
    Sign In• Register• Free Annual Reports • Free Newsletters. Dictionary;
    Investing; Markets; Personal Finance; Active Trading; Forex; ...

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