That was a good start to a chi-square analysis. There are numerous requirements
ID: 2949412 • Letter: T
Question
That was a good start to a chi-square analysis. There are numerous requirements - the variables must be exhaustive, so they must include all possible answers. For this reason, something like yes and no are valid since those would be the only two options, unless you had someone who couldn't answer it for various reasons. Similarly, it needs to be mutually exclusive, so someone couldn't be in two categories at the same time. This should make sense as you want to see if there's a relationship between the variables and you need to compare the expected counts with the actual counts. This is a very unique kind of test as you're only able to see categories - you wouldn't be able to tell if someone was at the high or low end of a category, for instance. Therefore, while it provides a quick and easy way to see if there are general differences, you don't necessarily know how extreme the situations are. Do you feel it's more important to have the quick and easy categorical results, or have the more detailed numerical results, and why?
Please help I posted this hours ago and no answer yet so I posted it again. I need this by tonight. thank you
Explanation / Answer
In such cases, more detailed numerical results are important as one of the basic assumption of Chi-Square is that the level of measurement of all the variables is nominal or ordinal. Thus, if a value is at the high or low end of a category then Chi Square Test should not be used for such cases.
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