13 Apr 2017 12:39 UTCThu 13 Apr 2017 - 12:39 pm UTC
I have a question about minimum sample sizes for a multiple choice survey.
We plan to run a survey with a multiple choice question, where respondents are allowed to choose only one choice. Here's a hypothetical but representative survey question:
Which feature do you want us to build next:
A) Feature 1
B) Feature 2
C) Feature 3
D) Feature 4
E) None of the above
How does one determine how many responses are necessary to achieve 85% confidence? (This is a business question, I'm happy with a lower level of confidence than a medical test).
How would sample size change if we assume that likely distribution of responses is something like this:
I can find online calculators for sample size, like this:
But I can't figure out how to use it for a multiple choice question. Explaining how to use it for a case like this so I can answer my own question next time would be ideal, if that's possible.
14 Apr 2017 17:06 UTCFri 14 Apr 2017 - 5:06 pm UTC
Wish I could help, but I'm just a mite too far removed from the days when I actively used statistics. Hopefully, someone here will have some useful input.