Algebra Pre-Algebra and Basic Algebra Math Forum

 February 27th, 2012, 08:53 AM #1 Newbie   Joined: Feb 2012 Posts: 2 Thanks: 0 STATISTIC SIGNIFICANCE (easy question, please help) Hi! I recently did a survey and need to find out if the results are statistically significant. I am not a math person and don't know how to do this. These are the instructions from my professor: "You will need to argue that your results are statistically "significant", that is, are sufficiently unlikley to have been the result of chance. Imagine that your subjects had answered by rolling a die for each question. How many times would you have to run the experiment to get results similar to the ones you observed? The usual standard is that if random inputs would have generated the pattern you saw no more than once in every twenty runs, we can be reasonably confident the pattern is not due to chance. You'll need to learn the techniques for proving that your results are statistically significant." In the survey I proposed a question and the people responded 1 2 3 4 or 5 (don't agree-strongly agree). If someone could explain to me the process/equation I need to find if these results are significant, it would be very helpful. Here is one set of data if you could give me an example: 1 - 5 responses 2 - 5 responses 3 - 10 responses 4 - 50 responses 5 - 55 responses
February 27th, 2012, 11:58 PM   #3
Senior Member

Joined: Apr 2011
From: USA

Posts: 782
Thanks: 1

You need to have some patience. It can take someone hours, or sometimes days, to answer a post. Someone who knows the answer has to come along, find your question, etc., and everyone is volunteers with real lives. Expecting an answer in two hours is unrealistic. Someone who knows an answer might be around, and they might not.

Like I for one don't know what this means:
Quote:
 The usual standard is that if random inputs would have generated the pattern you saw no more than once in every twenty runs, we can be reasonably confident the pattern is not due to chance.
I have never heard this before. In fact, I'm not even quite sure what exactly he is saying there. Not that I'm the expert on this, but just giving a "for instance" of why I personally am not answering this. I would think an "easy question" would at least be something I've heard before.

 Tags easy, question, significance, statistic

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