Residual Sum Of Squares - RSS

AAA

DEFINITION of 'Residual Sum Of Squares - RSS'

A statistical technique used to measure the amount of variance in a data set that is not explained by the regression model. The residual sum of squares is a measure of the amount of error remaining between the regression function and the data set. A smaller residual sum of squares figure represents a regression function which explains a greater amount of the data.

INVESTOPEDIA EXPLAINS 'Residual Sum Of Squares - RSS'

It is not possible to draw conclusions about the correctness of the regression function solely using the residual sum of squares. Since a sufficiently complex regression function can be made to closely fit virtually any data set, further study is necessary to determine whether the regression function is in fact useful in explaining the variance of the data set. Typically, however, a smaller residual sum of squares is ideal

RELATED TERMS
  1. Sum Of Squares

    A statistical technique used in regression analysis. The sum ...
  2. Stepwise Regression

    The step-by-step iterative construction of a regression model ...
  3. Sampling Error

    A statistical error to which an analyst exposes a model simply ...
  4. Residual Standard Deviation

    A statistical term used to describe the standard deviation of ...
  5. Regression

    A statistical measure that attempts to determine the strength ...
  6. Autoregressive

    A stochastic process used in statistical calculations in which ...
Related Articles
  1. Investing Basics

    Calculating Beta: Portfolio Math For The Average Investor

    Beta is a useful tool for calculating risk, but the formulas provided online aren't specific to you. Learn how to make your own.
  2. Investing Basics

    Regression Basics For Business Analysis

    This tool is easy to use and can provide valuable information on financial analysis and forecasting. Find out how.
  3. Options & Futures

    Bettering Your Portfolio With Alpha And Beta

    Increase your returns by creating the right balance of both these risk measures.
  4. Active Trading

    The Linear Regression Of Time and Price

    This investment strategy can help investors be successful by identifying price trends while eliminating human bias.
  5. Budgeting

    The P/E Ratio: A Good Market-Timing Indicator

    Check out the returns this newer technical analysis tool would've yielded over the period from 1920 to 2003.
  6. Investing

    How to Use Stratified Random Sampling

    Stratified random sampling is a technique best used with a sample population easily broken into distinct subgroups. Samples are then taken from each subgroup based on the ratio of the subgroup’s ...
  7. Fundamental Analysis

    Lognormal and Normal Distribution

    When and why do you use lognormal distribution or normal distribution for analyzing securities? Lognormal for stocks, normal for portfolio returns.
  8. Investing Basics

    Using Normal Distribution Formula To Optimize Your Portfolio

    Normal or bell curve distribution can be used in portfolio theory to help portfolio managers maximize return and minimize risk.
  9. Technical Indicators

    The Normal Distribution Table, Explained

    The normal distribution formula is based on two simple parameters - mean and standard deviation
  10. Economics

    Can Investors Trust Official Statistics?

    The official statistics in some countries need to be taken with a grain of salt. Find out why you should be skeptical.

You May Also Like

Hot Definitions
  1. Fixed-Charge Coverage Ratio

    A ratio that indicates a firm's ability to satisfy fixed financing expenses, such as interest and leases. It is calculated ...
  2. Efficiency Ratio

    Ratios that are typically used to analyze how well a company uses its assets and liabilities internally. Efficiency Ratios ...
  3. Fixed Cost

    A cost that does not change with an increase or decrease in the amount of goods or services produced. Fixed costs are expenses ...
  4. Subsidy

    A benefit given by the government to groups or individuals usually in the form of a cash payment or tax reduction. The subsidy ...
  5. Sunk Cost

    A cost that has already been incurred and thus cannot be recovered. A sunk cost differs from other, future costs that a business ...
  6. Technical Skills

    1. The knowledge and abilities needed to accomplish mathematical, engineering, scientific or computer-related duties, as ...
Trading Center