Presentation Facts
24th March 2008

The Typical PPT Presentation

posted in PPT Use |

Our PPT Use Survey began by trying to determine what the average PPT presentation looked like. To do this we searched for publicly available PPT files on the Web. A total of 175 presentations were downloaded and analyzed. Based on this survey, the typical PPT presentation could be described as follows:

Size - The average file size of a PPT file in this survey was just under 1 megabyte (783K)

Number of visuals - The typical presentation had 26 visuals and a total of 1,276 words

Bullet visuals - The average presentation included 16 bullet slides with an average of 5 bullets per bullet slide

Transitions and animations - The typical presentation examined used transitions and animations sparingly with an average of 6 total slide transitions and 5 total animations used. The animations typically were used only on a couple of slides in the presentation

Charts and graphics - While 62% of the average presentation file was composed of bulllet slides, the rest included an average of 2 chart slides (tables, line, pie or bar) and 6 slides with an art element (vector or bitmap). A slide with an art element could have a vector image and a bitmap image along with some text or bullets. The average presentation had 5 vector graphics and 2 bitmap images (logos were not included in the vector or bitmap count).

The typical PPT presentation in our survey looks very much like what you may have expected. Twenty six slides, mostly bulleted with a few charts and graphics sprinkled around. Typically, the creators of the files we examined were pretty restrained in their use of both transitions and animations.

In our next post, we will look at the percent of screen space used for text and graphics along with an assessment of the types of graphics used.

This entry was posted on Monday, March 24th, 2008 at 2:10 pm and is filed under PPT Use. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.

There are currently 3 responses to “The Typical PPT Presentation”

Why not let us know what you think by adding your own comment! Your opinion is as valid as anyone elses, so come on... let us know what you think.

  1. 1 On March 25th, 2008, Cliff said:

    Hi Bob - a great project - I’m looking forward to the rest of the findings.

    From a research perspective, could you let us know the criteria you used to find and select the PowerPoint files you analyzed? Did you employ a random sampling methodology so we would be able to extend the findings from your sample to all PowerPoint presentations? Are you assuming that the PowerPoint files that are available on the web are a true sample of the total universe of presentations? (For example, many presentations reside only behind corporate firewalls because of sensitive content, and/or are often greater than 50MB in size because of graphics and multimedia, either of which would preclude them from being on the web.)

    It’s quite possible that the files available on the web are indeed representative of typical presentations. But I think it’s important to elaborate on the research design and assumptions at the start to make them clear. This is something Tufte did not do in his “study” on PowerPoint, which was limited to “Typical PowerPoint Presentations that Edward Tufte Could Find on the Web”, ignoring the many types of presentations he was not able to access.

  2. 2 On March 26th, 2008, rbefus said:

    Great questions Cliff. Unfortunately, this was our first very elementary attempt to gather potentially useful information. We didn’t start with the mindset that we would be able to extrapolate whatever we found out to the whole universe of PPT files. Because were were working with files available on the Web, we automatically limited our ability to generalize our findings. We tried to get people to send in sample presentations but received too few to make a difference.

    In 2005, when we started this, we simply wanted to identify an interesting set of assessments and try to relate a few of our findings to something that has a research anchor. Consequently, the main thing we were looking for was the use of graphic elements in these presentations because Richard Mayer has presented some interesting research on the use of graphics, the percent of “screen” area used for text or graphics, the proximity of graphics to text and whether supporting graphic elements were simply decorative or really contributed to learning.

    So to answer your question about PPT selection, we simply searched for PPT extensions through Google and downloaded 75 presentations in 2005 and another 100 presentations in 2007. There was no method used related to which of the available files we chose.

  3. 3 On April 30th, 2008, Miguel Monteiro said:

    Hi!
    Just “totally” seconding Cliff questions.
    Adding more, some presentations posted in the
    web are not in PPT format, since many sites don’t accept ppt files.
    Some of them were converted into video files,
    as the case of this one, you can find at:
    http://www.youtube.com/watch?v=2Xm8G2AN8VU

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