How long is the average viva?
Top of my list of questions, I wanted to know how long vivas were. I added up all of the lengths and divided by the number of participants and arrived at 2 hours and 23 minutes.
So now we know.
Except…
That’s not very helpful is it? We need to know how that relates to the various lengths reported. Is this skewed by one person with a twelve hour viva? (thankfully no!) This average gives us a smile I think, but not much more. So let’s look closer:
This image shows times concentrated around a range from 120 to 180 minutes. In fact, in my data:
- 82.1% of respondents reported a viva of three hours or less, and almost 50% had a viva of two hours of less.
- Less than 5% had a viva of more than four hours.
- The most commonly reported time was 2 hours.
This is good news – and I think does a lot to debunk urban legends that get circulated. This data was collected from respondents who had their viva between 1999 and 2014, but almost two thirds of the responses were from 2010/14; when the set is restricted to responses from this period the results hold more or less true, with only a slight increase in longer vivas.