writing help: Chi-square distribution - Help.com

x^2 = [ ( n - 1 ) * s^2 ] / σ^2

where σ is the standard deviation of the population, s is the standard deviation of the sample, and n is the sample size.

Oh sorry, that’s the wrong one… that’s to calculate the chi-square statistic.

Try looking here: http://en.wikipedia.org/wiki/Chi-squa…

I could be wrong, but I think that all you have to do is compare your chi-square test, using x^2 = [ ( n - 1 ) * s^2 ] / σ^2 with that of your chi-square critical value. I’m thinking you have to use tables for this or just memorise it:

http://www.itl.nist.gov/div898/handbo…

So, if your x^2 chi-square critical value then you do not reject Ho.
Say what you calculated from
x^2 = [ ( n - 1 ) * s^2 ] / σ^2
= 0.8

you compare it with the value you get from the table (here we shall use degrees of freedom of 1 at 0.05 significance (see the table))

so the critical value would be 3.841,

so do not reject Ho and conclude that the values are uniformly distributed.

Ummm I think that youre doing a computing subject right? yea but I’m a maths student and suck at computing but yeahhh I’m thinking that all you have to do is compare all your results with 3.841 or whatever your degrees of freedom is.

yeah so if your x^2 is greater than your critical value, then you reject Ho and conclude that the values are not uniformly distributed.

Hopefully i didn’t get you confused.

Oops the second paragraph did not make any sense, here’s what i meant to say

So, if your x^2 chi-square is less than critical value then you do not reject Ho.
Say what you calculated from
x^2 = [ ( n - 1 ) * s^2 ] / σ^2
= 0.8