Which of the following is NOT a method of collecting TV audience data?

The collection of TV audience data is critical for networks and advertisers to understand viewer preferences and behaviors. Among the methods listed, online streaming subscriptions do not traditionally qualify as a method for collecting audience data in a research context.

Focus groups, for instance, involve discussions among selected participants to gather qualitative data about their viewing habits, preferences, and perceptions of content. This method provides in-depth insights directly from viewers.

Coincidental telephone surveys are another traditional technique where researchers call individuals at random moments to ask about their viewing activities. This method allows for the collection of real-time data regarding what people are watching, making it a direct measure of audience engagement.

Diaries are also a recognized method where viewers log their viewing habits over a period of time. This self-reported data can provide detailed insights into individual viewing patterns, helping researchers understand long-term trends and preferences.

In contrast, online streaming subscriptions primarily reflect transactional data related to the number of subscriptions and usage on the platform, rather than actively collecting qualitative audience insights or preferences as the other methods do. This transactional approach does not engage with viewers in the same manner as focus groups, surveys, or diaries, making it distinct from traditional audience data collection methods.