Scheffe's Test

AAA

DEFINITION of 'Scheffe's Test'

A statistical test that is used to make unplanned comparisons, rather than pre-planned comparisons, among group means in an analysis of variance (ANOVA) experiment. While Scheffe's test has the advantage of giving the experimenter the flexibility to test any comparisons that appear interesting, the drawback of this flexibility is that the test has very low statistical power.

INVESTOPEDIA EXPLAINS 'Scheffe's Test'

While pre-planned comparisons can be made using tests such as t-tests or F-tests, these tests are not suitable for post hoc or unplanned comparisons. For such comparisons, multiple comparison tests such as Scheffe's test, the Tukey-Kramer method, or the Bonferroni test are appropriate. The Scheffe test is named after American statistician Henry Scheffe.

RELATED TERMS
  1. Variance

    The spread between numbers in a data set, measuring Variance ...
  2. Bonferroni Test

    A type of multiple comparison test used in statistical analysis. ...
  3. Two-Tailed Test

    A statistical test in which the critical area of a distribution ...
  4. Analysis Of Variance - ANOVA

    A statistical analysis tool that separates the total variability ...
  5. Null Hypothesis

    A type of hypothesis used in statistics that proposes that no ...
  6. Hypothesis Testing

    A process by which an analyst tests a statistical hypothesis. ...
Related Articles
  1. Economic Indicators That Do-It-Yourself ...
    Investing Basics

    Economic Indicators That Do-It-Yourself ...

  2. A Guide To Conference Board Indicators
    Markets

    A Guide To Conference Board Indicators

  3. What are some examples of how cash flows ...
    Personal Finance

    What are some examples of how cash flows ...

  4. What is the difference between cash ...
    Fundamental Analysis

    What is the difference between cash ...

Hot Definitions
  1. Hyperinflation

    Extremely rapid or out of control inflation. There is no precise numerical definition to hyperinflation. Hyperinflation is ...
  2. Gross Rate Of Return

    The total rate of return on an investment before the deduction of any fees or expenses. The gross rate of return is quoted ...
  3. Debit Spread

    Two options with different market prices that an investor trades on the same underlying security. The higher priced option ...
  4. Leading Indicator

    A measurable economic factor that changes before the economy starts to follow a particular pattern or trend. Leading indicators ...
  5. Wage-Price Spiral

    A macroeconomic theory to explain the cause-and-effect relationship between rising wages and rising prices, or inflation. ...
  6. Accelerated Depreciation

    Any method of depreciation used for accounting or income tax purposes that allows greater deductions in the earlier years ...
Trading Center