Glossary of statistical terms

facebook LinkedIn twitter Google+ Email
Reliability (in Survey Analysis):

In survey analysis, e.g. in psychometrics , reliability is a measure of reproducibility of the survey instrument or test. In other words, reliability is a measure of precision - i.e. it describes the random error of the survey instrument.

There are several types of reliability: test-retest reliability , alternate-form reliability , internal consistency reliability , Internal consistency reliability . intraobserver reliability , interobserver reliability .

Note: the term reliability has a different meaning in natural sciences and engineering (see reliability ).

See also: split-halves method

Browse Other Glossary Entries



Want to learn more about this topic?

Statistics.com offers over 100 courses in statistics from introductory to advanced level. Most are 4 weeks long and take place online in series of weekly lessons and assignments, requiring about 15 hours/week. Participate at your convenience; there are no set times when you must to be online. Ask questions and exchange comments with the instructor and other students on a private discussion board throughout the course.


Survey Design and Sampling Procedures

This course covers the crafting of survey questions, the design of surveys, and different sampling procedures that are used in practice. Longstanding basic principles of survey design are covered, and the impact of the trend toward increased respondent resistance is discussed.


Survey Analysis

This course covers the analysis of data gathered in surveys.



Back to Main Glossary

Promoting better understanding of statistics throughout the world

To celebrate the International Year of Statistics in 2013, we started a program to provide a statistical term every week, delivered directly to your inbox. The Word of the Week program proved to be quite popular, and continues. The Institute for Statistics Education offers an extensive glossary of statistical terms, available to all for reference and research. Make it your New Year's resolution to improve your own statistical knowledge! Sign up here. Rather not have more email? Simply bookmark our home page and check our “Stats Word of the Week” feature.

Want to be notified of future courses?

Yes
Student comments