Related Experiment Video

Updated: May 1, 2026

The α-test: Rapid Cell-free CD4 Enumeration Using Whole Saliva
11:22

The α-test: Rapid Cell-free CD4 Enumeration Using Whole Saliva

Published on: May 16, 2012

12.8K

Ammons quick test validity among randomly selected referrals

Robert John Zagar, Joseph W Kovach, Kenneth G Busch

    Psychological Reports
    |April 4, 2014
    PubMed

    More Related Videos

    Development of a Virtual Reality Assessment of Everyday Living Skills10:32

    Development of a Virtual Reality Assessment of Everyday Living Skills

    Published on: April 23, 2014

    20.2K
    Computerized Adaptive Testing System of Functional Assessment of Stroke05:21

    Computerized Adaptive Testing System of Functional Assessment of Stroke

    Published on: January 7, 2019

    5.4K

    Related Concept Videos

    Cochran's Q Test01:17

    Cochran's Q Test

    Cochran's Q Test is a nonparametric statistical test used to determine if there are potential differences in the outcomes of three or more related groups on a binary (yes/no) or dichotomous outcome. It is essentially an extension of the McNemar Test, which is limited to two related samples - Cochran's Q test can handle three or more related samples, making it more versatile in scenarios where subjects are measured under multiple conditions. The test statistic follows a Chi-Square...
    1.2K
    McNemar's Test01:23

    McNemar's Test

    McNemar's Test is a nonparametric statistical test used to determine if there is a significant difference in proportions between two related groups when the outcome is binary (e.g., yes/no, success/failure). It is beneficial when we have paired data, such as pre-test/post-test designs, where the same subjects are measured under two different conditions. The test is named after the statistician Quinn McNemar, who introduced it in 1947. It is commonly used in situations where subjects are...
    1.0K
    Bonferroni Test01:10

    Bonferroni Test

    The Bonferroni test is a statistical test named after Carlo Emilio Bonferroni, an Italian mathematician best known for Bonferroni inequalities. This statistical test is a type of multiple comparison test to determine which means are different than the rest. Bonferroni test can minimize the Type 1 error by reducing the significance level alpha, which otherwise increases with sample pairs.
    The means of different samples are first paired in all possible combinations.
    The null hypothesis of the...
    2.6K
    Friedman Two-way Analysis of Variance by Ranks01:21

    Friedman Two-way Analysis of Variance by Ranks

    Friedman's Two-Way Analysis of Variance by Ranks is a nonparametric test designed to identify differences across multiple test attempts when traditional assumptions of normality and equal variances do not apply. Unlike conventional ANOVA, which requires normally distributed data with equal variances, Friedman's test is ideal for ordinal or non-normally distributed data, making it particularly useful for analyzing dependent samples, such as matched subjects over time or repeated measures...
    595
    Reliability and Validity01:29

    Reliability and Validity

    Reliability and validity are two important considerations that must be made with any type of data collection. Reliability refers to the ability to consistently produce a given result. In the context of psychological research, this would mean that any instruments or tools used to collect data do so in consistent, reproducible ways.
    12.9K
    Sign Test for Matched Pairs01:17

    Sign Test for Matched Pairs

    The sign test for matched pairs offers a robust method for comparing two paired samples, often for the effects of an intervention in one of them. This method is very useful in situations where the underlying distribution of the data is unknown. The test compares two related samples—often pre- and post-treatment measurements on the same subjects—to determine if there are significant differences in their median values.
    To conduct the sign test, we first calculate the differences in...
    482