Comments on: How do I know if I’ve surveyed enough people for a market research study? http://www.mrcworld.com/how-do-i-know-if-ive-surveyed-enough-people-for-a-market-research-study/ Sat, 13 Aug 2011 22:25:28 +0000 hourly 1 http://wordpress.org/?v=3.2.1 By: swngcat http://www.mrcworld.com/how-do-i-know-if-ive-surveyed-enough-people-for-a-market-research-study/comment-page-1/#comment-853 swngcat Wed, 10 Mar 2010 18:57:03 +0000 http://www.mrcworld.com/how-do-i-know-if-ive-surveyed-enough-people-for-a-market-research-study/#comment-853 It really depends on how you're segmenting your data. If you want a respresentative sample of two segments, that number is smaller than a representative sample of four segments. Also, you need to choose your level of confidence and accuracy -- the standard rule of thumb is 95% confidence and this is based on the Normal Curve of results (also known as the Bell Curve). There is a great, FREE software tool you can get from DecisionAnalyst to input your values to determine the best sample size. I use it all of the time. It really depends on how you’re segmenting your data. If you want a respresentative sample of two segments, that number is smaller than a representative sample of four segments. Also, you need to choose your level of confidence and accuracy — the standard rule of thumb is 95% confidence and this is based on the Normal Curve of results (also known as the Bell Curve). There is a great, FREE software tool you can get from DecisionAnalyst to input your values to determine the best sample size. I use it all of the time.

]]> By: kemperk http://www.mrcworld.com/how-do-i-know-if-ive-surveyed-enough-people-for-a-market-research-study/comment-page-1/#comment-852 kemperk Wed, 10 Mar 2010 18:25:04 +0000 http://www.mrcworld.com/how-do-i-know-if-ive-surveyed-enough-people-for-a-market-research-study/#comment-852 1,000 people are the norm for a survey after it has been tried and tested and fine tuned. [u can start with 50 and then 250 as you TWEAK the survey] 1,000 people are the norm for
a survey after it has been tried and
tested and fine tuned.

[u can start with 50 and then 250 as you TWEAK the survey]

]]> By: tim@ysu http://www.mrcworld.com/how-do-i-know-if-ive-surveyed-enough-people-for-a-market-research-study/comment-page-1/#comment-851 tim@ysu Wed, 10 Mar 2010 18:22:03 +0000 http://www.mrcworld.com/how-do-i-know-if-ive-surveyed-enough-people-for-a-market-research-study/#comment-851 It really depends on how the research was collected. By this I mean how did you go about choosing which people you surveyed? The best way is through random sampling (that is the way using a list of randomly listed numbers). I know it is much more tedious and time consuming but it is really the only way to make sure you have a fair representation of the population. It really depends on how the research was collected. By this I mean how did you go about choosing which people you surveyed? The best way is through random sampling (that is the way using a list of randomly listed numbers). I know it is much more tedious and time consuming but it is really the only way to make sure you have a fair representation of the population.

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