Math & Science ⇒ Left side of in-line equation too small

[NELLLY]

Hi
I need to get the following equation inside a sentence

Code: Select all

If $\bar{Y}=\frac{\rm n_1 \bar{X_1}+n_2 \bar{X_2}}{\rm n_1+n_2}$, then

but the right part is too small in comparison with the left one. Is there a solution to get both sides with equal size shapes.

[magicmoose]

You could try

Code: Select all

\documentclass{article}
\begin{document}
If $\displaystyle\bar{Y}=\frac{\rm n_1 \bar{X_1}+n_2 \bar{X_2}}{\rm n_1+n_2}$, then
\end{document}

[NELLLY]

Thank you very much.