P-Test

Dictionary Says

Definition of 'P-Test'


A statistical method used to test one or more hypotheses within a population or a proportion within a population. When testing a hypothesis about a population proportion (p) within a large population (one in which the sample size, "n", is not greater than 5% of the overall population), the formula is:

x = (m/n-P) / SqRt[P(1-P)/n]
m= "yes" response
n = random sample size
p = proportion
P = population

This formula is used to test three hypotheses:

  1. p ≤ P
  2. p ≥ P
  3. p = P
The p-test statistic typically follows a standard normal distribution when large sample sizes are used, and researchers use Z-tests to determine whether a hypothesis passes based on a specific significance level will be rejected. The larger the p-value in the p-test, the more likely the hypothesis is true.

Investopedia Says

Investopedia explains 'P-Test'


For example, a polling group contacted a group of investors and asked if they felt that the economy would fall into a recession. Of the 1000 people contacted, 700 said that they thought that the economy was heading toward recession. The researchers then applied the P-Test to determine if p ≤ 0.60, p ≥ 0.60, or p = 0.60; basically, what percentage of the population believe that the economy will fall into a recession.
comments powered by Disqus
Hot Definitions
  1. Valuation

    The process of determining the current worth of an asset or company. There are many techniques that can be used to determine value, some are subjective and others are objective.
  2. Valuation

    The process of determining the current worth of an asset or company. There are many techniques that can be used to determine value, some are subjective and others are objective.
  3. Tech Street

    A term used in the financial markets and the press to refer to the technology sector. Companies like Intel, Microsoft, Apple and Dell are all considered to be part of Tech Street.
  4. Tech Street

    A term used in the financial markets and the press to refer to the technology sector. Companies like Intel, Microsoft, Apple and Dell are all considered to be part of Tech Street.
  5. Momentum Investing

    An investment strategy that aims to capitalize on the continuance of existing trends in the market. The momentum investor believes that large increases in the price of a security will be followed by additional gains and vice versa for declining values.
  6. Momentum Investing

    An investment strategy that aims to capitalize on the continuance of existing trends in the market. The momentum investor believes that large increases in the price of a security will be followed by additional gains and vice versa for declining values.
Trading Center