Mathematical formulae

[Kirin_Guess]

Just a test $$w_{hij} = \frac {N_h}{n_h}$$ $$w_{hij} \neq w_{hi’j}$$

[Charlie Joyez]

nice, did you write that using \LaTeX? How did you specified it was math code?
In my preview, Latex doesn't seems to work : at least not this code: \[w_{ij}]

[Sebastian Kripfganz]

Charlie Joyez
There is a backslash missing in front of your closing bracket. $$w_{ij}$$

[Kirin_Guess]

I just followed other forum members' advice and tested here.
Please see this post http://www.statalist.org/forums/foru...statalist-post

[Charlie Joyez]

Ok, nice, thanks.
But still doesn't work in preview mode.

[eric_a_booth]

Right , only works after you hit 'post reply'.

[Kirin_Guess]

Test again. Suppose that we have a random variable $$Y_i \sim Poisson( \lambda_i )$$ and a random variable $$X_i \sim Bernoulli[ f(Y_i) ]$$ , where the probability of $$X=1$$ is some function of $$Y$$ .

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$$\sum_{y=0}^{\infty} f(Y_i)^{X_i} [1-f(Y_i)]^{1-X_i} \biggl( \frac{\lambda_i^{Y_i}}{Y_i!}e^{-\lambda_i} \biggl)$$
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For future reference: it appears that Statalist does not accept in-text formulae.