Quote:
Originally Posted by MikeF74
I think your results will be skewed, since people who have had screen breaks are a lot more likely to open this thread than those who have not had a screen break.
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It is true that we may not get accurate 'absolute' failure rate due to self-selection bias you mentioned. However, if we assume users are equally likely to respond to such surveys regardless of their products (Sony Reader, Cybook, Kindle..), still the 'relative' failure rate may be meaningful.