SIGN PETITION Nikon d600 dust on sensor

Started Nov 7, 2012 | Discussions thread
Juergen Senior Member • Posts: 1,381
Re: I've been telling people this for ages

GREENBELT wrote:

It's not correct. Many owners don't know that there is a poll.

I agree with you that is not a scientific poll, but you can read it in this way:

194 owners took part

155 owners have problems

34 owners haven't problems

5 owners are not sure

In statistic science this is called "representative sample".

No, 194 people is NOT a "representative sample".

When you draw up statistics you don't use all the people of the universe but you use a "representative sample", the problem here with this poll probabily is that the sample is not "representative".

Yes, as said, it's NOT a "representative sample". For that you'd need a certain number of randomly picked users.

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