Poor Methodology Blights Study on DA and Apartheid

Cape Times (South Africa), May 1, 2013 | Go to article overview

Poor Methodology Blights Study on DA and Apartheid


BYLINE: Herman W Kruijsse

Several newspapers cited a recent survey that asked respondents between the age of 15 and 34 and from different ethnicity and gender whether they believe that the DA, if elected, would bring back apartheid. Apparently 52% of blacks, 26% of Indians, 21% of coloureds and 19% of whites believe the DA would bring back apartheid.

The researchers of the above survey state that the results are nationally representative in terms of age, gender and race.

The results are based on the responses of 3 009 respondents. There are four main factors: age, race, gender and provinces. The province factor is necessary to control the variety within and between provinces. For example, the population of Limpopo consists almost 97% of black people whereas black people in Gauteng, whose population is almost triple that of Limpopo, comprise 74% of the population.

"Provinces" has nine categories, "gender" two categories and "race" four categories. "Age" runs between 15 and 34 years old. Since it is likely that age is observed as belonging to an age class, I must assume that at least three age categories were used: 16 to 20; 21 to 27 and 28 to 33.

Therefore, if every category is to be observed, at least 12 males and 12 females per province are required to have a single opinion per province. Thus we would need a "national" sample size of 216 (2x3x4x9) to have one valid observation per province.

It is evident that a single black or white or coloured or Indian female or male respondent of a particular age category is not representative for the opinion of people with similar demographics in a province, neither for that matter would nine respondents be representative of the whole country.

Would you think that 14 per province would be representative? For that is what the sample size of 3 009 used in the survey implies.

Interviews were carried out on cellphones. This raises several questions. Did a random generator generate cellphone numbers that were called by trial and error and were people asked to state their demographics prior to an interview? Was the cellphone number of the survey group advertised so that people could respond? Were numbers obtained by some databases of which owners of cellphone numbers agreed to have their numbers used for such purposes?

We do know that there is no public directory of cellphone numbers; they are private.

Either way - legal, illegal or unethical - interviewing by cellphone is prone to non-random sampling. …

The rest of this article is only available to active members of Questia

Sign up now for a free, 1-day trial and receive full access to:

  • Questia's entire collection
  • Automatic bibliography creation
  • More helpful research tools like notes, citations, and highlights
  • Ad-free environment

Already a member? Log in now.

Notes for this article

Add a new note
If you are trying to select text to create highlights or citations, remember that you must now click or tap on the first word, and then click or tap on the last word.
One moment ...
Default project is now your active project.
Project items

Items saved from this article

This article has been saved
Highlights (0)
Some of your highlights are legacy items.

Highlights saved before July 30, 2012 will not be displayed on their respective source pages.

You can easily re-create the highlights by opening the book page or article, selecting the text, and clicking “Highlight.”

Citations (0)
Some of your citations are legacy items.

Any citation created before July 30, 2012 will labeled as a “Cited page.” New citations will be saved as cited passages, pages or articles.

We also added the ability to view new citations from your projects or the book or article where you created them.

Notes (0)
Bookmarks (0)

You have no saved items from this article

Project items include:
  • Saved book/article
  • Highlights
  • Quotes/citations
  • Notes
  • Bookmarks
Notes
Cite this article

Cited article

Style
Citations are available only to our active members.
Sign up now to cite pages or passages in MLA, APA and Chicago citation styles.

(Einhorn, 1992, p. 25)

(Einhorn 25)

1

1. Lois J. Einhorn, Abraham Lincoln, the Orator: Penetrating the Lincoln Legend (Westport, CT: Greenwood Press, 1992), 25, http://www.questia.com/read/27419298.

Cited article

Poor Methodology Blights Study on DA and Apartheid
Settings

Settings

Typeface
Text size Smaller Larger Reset View mode
Search within

Search within this article

Look up

Look up a word

  • Dictionary
  • Thesaurus
Please submit a word or phrase above.
Print this page

Print this page

Why can't I print more than one page at a time?

Full screen

matching results for page

Cited passage

Style
Citations are available only to our active members.
Sign up now to cite pages or passages in MLA, APA and Chicago citation styles.

"Portraying himself as an honest, ordinary person helped Lincoln identify with his audiences." (Einhorn, 1992, p. 25).

"Portraying himself as an honest, ordinary person helped Lincoln identify with his audiences." (Einhorn 25)

"Portraying himself as an honest, ordinary person helped Lincoln identify with his audiences."1

1. Lois J. Einhorn, Abraham Lincoln, the Orator: Penetrating the Lincoln Legend (Westport, CT: Greenwood Press, 1992), 25, http://www.questia.com/read/27419298.

Cited passage

Welcome to the new Questia Reader

The Questia Reader has been updated to provide you with an even better online reading experience.  It is now 100% Responsive, which means you can read our books and articles on any sized device you wish.  All of your favorite tools like notes, highlights, and citations are still here, but the way you select text has been updated to be easier to use, especially on touchscreen devices.  Here's how:

1. Click or tap the first word you want to select.
2. Click or tap the last word you want to select.

OK, got it!

Thanks for trying Questia!

Please continue trying out our research tools, but please note, full functionality is available only to our active members.

Your work will be lost once you leave this Web page.

For full access in an ad-free environment, sign up now for a FREE, 1-day trial.

Already a member? Log in now.