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Related Concept Videos

Introduction to Test of Independence01:21

Introduction to Test of Independence

In statistics, the term independence means that one can directly obtain the probability of any event involving both variables by multiplying their individual probabilities. Tests of independence are chi-square tests involving the use of a contingency table of observed (data) values.
The test statistic for a test of independence is similar to that of a goodness-of-fit test:
Testing a Claim about Population Proportion01:24

Testing a Claim about Population Proportion

A complete procedure for testing a claim about a population proportion is provided here.
There are two methods of testing a claim about a population proportion: (1) Using the sample proportion from the data where a binomial distribution is approximated to the normal distribution and (2) Using the binomial probabilities calculated from the data.
The first method uses normal distribution as an approximation to the binomial distribution. The requirements are as follows: sample size is large...
Convenience Sampling Method00:55

Convenience Sampling Method

Sampling is a technique to select a portion (or subset) of the larger population and study that portion (the sample) to gain information about the population. Data are the result of sampling from a population. The sampling method ensures that samples are drawn without bias and accurately represent the population.
Convenience sampling is a non-random method of sample selection; this method selects individuals that are easily accessible and may result in biased data. For example, a marketing...
Surveys02:16

Surveys

Often, psychologists develop surveys as a means of gathering data. Surveys are lists of questions to be answered by research participants, and can be delivered as paper-and-pencil questionnaires, administered electronically, or conducted verbally. Generally, the survey itself can be completed in a short time, and the ease of administering a survey makes it easy to collect data from a large number of people.
The Integral Test01:23

The Integral Test

The Integral Test is a method for determining whether an infinite series converges or diverges by comparing the series to an improper integral. It is especially useful when the terms of a series are difficult to add directly, but they follow the values of a related continuous function. Instead of summing infinitely many discrete terms one by one, the test studies the area under a curve that represents the same pattern of decrease.A glow stick provides a useful example of this idea. After...
Test for Homogeneity01:23

Test for Homogeneity

The goodness–of–fit test can be used to decide whether a population fits a given distribution, but it will not suffice to decide whether two populations follow the same unknown distribution. A different test, called the test for homogeneity, can be used to conclude whether two populations have the same distribution. To calculate the test statistic for a test for homogeneity, follow the same procedure as with the test of independence. The hypotheses for the test for homogeneity can be stated as...

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Related Experiment Video

Updated: Jul 17, 2026

Computerized Adaptive Testing System of Functional Assessment of Stroke
05:21

Computerized Adaptive Testing System of Functional Assessment of Stroke

Published on: January 7, 2019

The 2007 Census Test: a major step towards the 2011 Census.

Pete Benton1, Elizabeth McLaren, Sarah Walker

  • 1Office for National Statistics.

Population Trends
|January 19, 2007
PubMed
Summary

The Office for National Statistics (ONS) is conducting a large-scale 2007 Census field test across five diverse local authority areas. This test is crucial for refining methods and improving coverage for the upcoming 2011 Census of Population.

Related Experiment Videos

Last Updated: Jul 17, 2026

Computerized Adaptive Testing System of Functional Assessment of Stroke
05:21

Computerized Adaptive Testing System of Functional Assessment of Stroke

Published on: January 7, 2019

Area of Science:

  • Demography
  • Social Statistics
  • Government Planning

Background:

  • The Office for National Statistics (ONS) is preparing for the 2011 Census of Population for England and Wales.
  • A comprehensive testing and rehearsal program is underway, including a 2007 field test and a 2009 rehearsal.

Purpose of the Study:

  • To conduct a large-scale field test of census operations in 2007.
  • To evaluate census enumeration methods and assess field conditions across varied geographical and demographic areas.
  • To inform planning for the 2011 Census, aiming to enhance overall coverage and public confidence in results.

Main Methods:

  • A large-scale test involving approximately 100,000 households across five selected local authority areas.
  • Selection of local authorities in England (Bath and North East Somerset, Camden, Liverpool, Stoke-on-Trent) and Wales (Carmarthenshire) to represent diverse populations and housing types.
  • Partnership between the ONS Census team and local authorities in planning and executing the census enumeration.

Main Results:

  • The 2007 test will cover diverse areas to reflect a cross-section of the population and housing.
  • The selection of local authorities ensures a varied testing ground for census operations.
  • Partnership models are being developed to improve census planning and execution.

Conclusions:

  • The 2007 Census field test is a vital step in the preparation for the 2011 Census.
  • The test aims to refine operational procedures and ensure robust data collection.
  • Findings will contribute to improved census coverage and user confidence in the final results.