skip navigation

PUBLICATIONS

Register for Latest Research

Stay Informed
Register with NCJRS to receive NCJRS's biweekly e-newsletter JUSTINFO and additional periodic emails from NCJRS and the NCJRS federal sponsors that highlight the latest research published or sponsored by the Office of Justice Programs.

NCJRS Abstract

The document referenced below is part of the NCJRS Virtual Library collection. To conduct further searches of the collection, visit the Virtual Library. See the Obtain Documents page for direction on how to access resources online, via mail, through interlibrary loans, or in a local library.

 

NCJ Number: 66666 Find in a Library
Title: STATISTICAL DISTRIBUTIONS IN SOCIAL RESEARCH - SOME EMPIRICAL APPLICATIONS
Journal: EVALUATION REVIEW  Volume:4  Issue:2  Dated:(APRIL 1980)  Pages:241-272
Author(s): G VIGDERHOUS
Corporate Author: Sage Publications, Inc
United States of America
Date Published: 1980
Page Count: 32
Sponsoring Agency: Sage Publications, Inc
Thousand Oaks, CA 91320
Type: Statistics
Format: Article
Language: English
Country: United States of America
Annotation: THIS ARTICLE INTRODUCES AND APPLIES THE PEARSON SYSTEM OF FREQUENCY CURVES. THIS SYSTEM CAN IDENTIFY A WIDE RANGE OF SKEWED STATISTICAL DISTRIBUTIONS USING EMPIRICAL DATA.
Abstract: IN APPLIED RESEARCH, SOCIAL SCIENTISTS MUST DETERMINE WHETHER THE ASSUMPTION OF NORMALITY OF DISTRIBUTION IS REASONABLE. GIVEN THAT SOCIOLOGICAL PHENOMENA (INCOME, EDUCATION, OCCUPATION, ETC.) ARE MORE LIKELY TO CONFORM TO VARIOUS TYPES OF SKEWED DISTRIBUTIONS THAN TO THE NORMAL ONE, IT IS METHODOLOGICALLY ADVANTAGEOUS TO IDENTIFY A SPECIFIC SKEWED DISTRIBUTION WHICH CONFORMS TO A STATISTICAL DISTRIBUTION. PEARSON SUGGESTED THAT IT IS USUALLY SUFFICIENTLY ACCURATE TO ESTIMATE CURVES BASED ON SECOND-DEGREE POLYNOMIALS. PEARSON'S SYSTEM HAS THREE MAIN TYPES OF FREQUENCY CURVES AND CAN SIGNIFICANTLY HELP IN SOCIAL RESEARCH. A POPULATION DISTRIBUTION COULD BE COMPARED WITH A SAMPLE DISTRIBUTION OR REPEATED SAMPLES COULD BE ANALYZED TO ESTIMATE THE PARENT DISTRIBUTION. IDENTIFICATION OF THE DISTRIBUTION COULD ACCURATELY REVEAL THE DISTRIBUTION'S MODE AND THE PROBABILITY OF OCCURRENCE OF A SOCIOLOGICAL EVENT GIVEN A CERTAIN RANGE OF THE INDEPENDENT VARIABLE. SOME DISTRIBUTIONS ARE BIMODAL, HOWEVER, AND THEREFORE LESS LIKELY TO CONFORM TO A STATISTICAL DISTRIBUTION. IN MANY CASES ALL BUT ONE OF THE DISTRIBUTION'S CATEGORIES COMFORM TO A SPECIFIC DISTRIBUTION. A CATEGORY'S DEVIATION FROM THE DISTRIBUTION COULD BE INVESTIGATED. IDENTIFICATION OF A STATISTICAL DISTRIBUTION PROVIDES OBJECTIVE CRITERIA FOR EVALUATING FUTURE RESEARCH FINDINGS, WHICH COULD CLASSIFY SOCIODEMOGRAPHIC DISTRIBUTIONS INTO VARIOUS TYPES OF STATISTICAL DISTRIBUTIONS. NOTES, ILLUSTRATIVE EXAMPLES, TABLES, FIGURES, A REFERENCE LIST, AND APPENDIXES PRESENTING MATHEMATICAL DETAILS OF THE METHOD, ARE INCLUDED. (CFW)
Index Term(s): Estimates; Evaluation; Frequency distribution; Mathematical modeling; Statistical analysis; Statistics
To cite this abstract, use the following link:
http://www.ncjrs.gov/App/publications/abstract.aspx?ID=66666

*A link to the full-text document is provided whenever possible. For documents not available online, a link to the publisher's website is provided. Tell us how you use the NCJRS Library and Abstracts Database - send us your feedback.