What is wrong with this code?

$\displaystyle E(S^{2}) = \frac{1}{n-1} \left{\sum E(X_{i}^{2}) - \frac{1}{n} E \left[ \left(\sum X_{i}\right)^{2}\right] \right}$
Its not parsing.

never mind: figured it out

Quote:

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Originally Posted by heathrowjohnny

$\displaystyle E(S^{2}) = \frac{1}{n-1} \left{\sum E(X_{i}^{2}) - \frac{1}{n} E \left[ \left(\sum X_{i}\right)^{2}\right] \right}$
Its not parsing.

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1. you need [tex] tags rather than "$"s

2. as {} are meta grouping delimiters used by LaTeX if you want to uses
them as parentheses you have to preceed them with "\"


[tex] \displaystyle E(S^{2}) = \frac{1}{n-1} \left\{\sum E(X_{i}^{2}) - \frac{1}{n} E \left[ \left(\sum X_{i}\right)^{2}\right] \right\}[/tex]

produces:



3. As far as I am aware the \displaystyle is redundant in the LaTeX implemented here.

RonL

Thanks. I was using the $ to illustrate the code.

Quote:

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Originally Posted by heathrowjohnny

Thanks. I was using the $ to illustrate the code.

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[noparse][/noparse] tags will display the LaTeX including
tags.

RonL