This dataset example describes a frequency distribution, or “frequency,” for a categorical variable. A frequency distribution reports how many and what percentage of observations fall into each category for that variable. Frequency distributions are critical in quantitative data analysis because they are usually the first test a researcher will use to both explore their data and check for errors and extreme values. This example uses a subset of data from the Pew Research Center’s Project for Excellence in Journalism News Coverage Index for 2012. Specifically, it presents a frequency of the format used for network and cable TV news stories aired on news shows from January through May of 2012. Understanding the formats TV news shows use to present stories is the first step in ...
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Pew Research Center. (2012). 2012 Project for Excellence in Journalism News Coverage Index [Data file]. Retrieved from http://www.journalism.org/datasets/2012-news-coverage-index-data-set/
2012 Project for Excellence in Journalism News Coverage Index (NCI)
Pew Research Center
American news stories from newspapers, online news sources, network television, cable news, and radio news
Pew Research Center
Pew Research bears no responsibility for interpretations presented or conclusions reached based on analysis of the data
A multistage, purposive sampling process of media outlets was employed to provide a broad, illustrative but not strictly representative sample of the media universe.
Weights for news sources: Newspapers (0.19), Online (0.30), Network TV (0.15), Cable TV (0.23), Radio (0.12)
01-2012 to 05-2012
- Mihaescu, O. (2010). Frequency distribution. In N. J. Salkind (Ed.), Encyclopedia of research design (pp. 504-508). Thousand Oaks, CA: SAGE Publications, Inc. DOI: http://dx.doi.org/10.4135/9781412961288.n158
- Frequency distribution. (2004). In D. Cramer, & D. Howitt (Eds.), The SAGE dictionary of statistics (p. 69). London, UK: SAGE Publications, Ltd. Retrieved from http://srmo.sagepub.com/view/the-sage-dictionary-of-statistics/n220.xml
Broadcast Start Time
Duration in Seconds