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5 votes
2 answers
518 views

How to analyse results for an open ended question?

I asked an open-ended question in a survey about one of our app's features (That is somewhat similar to its search feature) to find out why users would use this instead of search. I've got a large ...
Blue Ocean's user avatar
  • 10.8k
1 vote
2 answers
110 views

Is there any value in a post user testing questionnaire considering the sample sizes being small?

I worked at company that after user testing sessions got users to complete a post testing questionnaire. The questionnaire tended to ask user for an NPS score, answer SUS (usability) questions and the ...
James M's user avatar
  • 11
1 vote
1 answer
73 views

Does using part of a usability questionnaire diminish its validity?

I'm interested in using QUIS (http://garyperlman.com/quest/quest.cgi) but the questions about system capabilities are irrelevant for my purposes as well as the questions about screens. I'm primarily ...
fdr's user avatar
  • 111
4 votes
1 answer
5k views

How many users do I need to run a SUS and get valid result?

I ran a System Usability Scale survey on my team (7 people) but I'm not sure that's enough to get relevant result and I didn't find any article recommending anything about the number of people to ...
Édouard Lopez's user avatar
1 vote
2 answers
155 views

What's a good approach to analyze a lot of answers to a survey with open questions?

We asked our users what's their main goal of current visit (open question). We received a lot of answers and I'm wondering what would be the best approach to analyze this data. In theory I could ...
Matt's user avatar
  • 121
0 votes
2 answers
970 views

Using SUS to measure usability of an existing system and compare with a redesigned system

I will be undertaking a whole-scale redesign of an existing system. I'd like to use SUS ("System usability scale") questionnaires to measure improvements between iterations. As a baseline, I want to ...
Oliver Moran's user avatar