Can anyone tell me what is wrong with what ive written here - its coming up with lots of errors (inlcuded below). I have the \usepackage{multirow} at the beginning. Thanks(adsbygoogle = window.adsbygoogle || []).push({});

[tex]

\begin{table}[h]

\caption{Investigation of interleaf leakage using ion chamber}

\begin{center}

\begin{tabular}{c c c c}

\hline\hline

MLC open/closed & Position from Original (mm) & Reading (per 200MU) & $\mbox{~~}$ Average $\mbox{~~}$ \\ [0.5ex]

\hline\hline

open & 0 & 4.27, 4.26 & $\mbox{~~}$ 4.265 \\

closed & 0 & 0.49 &

\begin{flushleft}

$$\mbox{~~}$$\ldelim \} {3} {7mm} \multirow{3}{*}{0.0493}

\end{flushleft}

\\

closed & 1 & 0.50 & \\

closed & 2 & 0.49 & \\ [1ex]

\hline

\end{tabular}

\label{rubbish}

\end{center}

\caption{Uncertainty of the Measurement}

\begin{center}

\begin{tabular}{c c}

\hline\hline

Source of uncertainty & Uncertainty \\ [0.5ex]

\hline\hline

standard deviation & see equation \ref{SD} \\

scale reading & $\pm$0.01mm \\

response of electrometer & $\pm$0.5\% \\

reproducibility of unit & $\pm$1\% \\

\hline

& \\

where, & \\

\multicolumn{2}{c}{

\begin{equation}

\mbox{~~~~~~~~~~~~~~~~~~~~~~~~~~~}StandardDeviation = \sqrt{\frac{\sum^{n}_{i=0}(x_i-\bar{x})}{n-1}},\mbox{~~~~~~~~~~~~~~~~~~~~~~~~~~~}

\label{SD}

\end{equation}

} \\

& \\

\multicolumn{2}{c}{where $\bar{x}$ is the average value, $x_i$ is the i-th reading and $n$ is the total number of readings.} \\

\end{tabular}

\label{uncert}

\end{center}

\end{table}

[\tex]

! LaTeX Error: Something's wrong--perhaps a missing \item.

See the LaTeX manual or LaTeX Companion for explanation.

Type H <return> for immediate help.

...

l.649 \begin{flushleft}

Try typing <return> to proceed.

If that doesn't work, type X <return> to quit.

! LaTeX Error: Something's wrong--perhaps a missing \item.

See the LaTeX manual or LaTeX Companion for explanation.

Type H <return> for immediate help.

...

l.649 \begin{flushleft}

Try typing <return> to proceed.

If that doesn't work, type X <return> to quit.

! LaTeX Error: Something's wrong--perhaps a missing \item.

See the LaTeX manual or LaTeX Companion for explanation.

Type H <return> for immediate help.

...

l.649 \begin{flushleft}

Try typing <return> to proceed.

If that doesn't work, type X <return> to quit.

! LaTeX Error: Something's wrong--perhaps a missing \item.

See the LaTeX manual or LaTeX Companion for explanation.

Type H <return> for immediate help.

...

l.651 \end{flushleft}

Try typing <return> to proceed.

If that doesn't work, type X <return> to quit.

! LaTeX Error: Something's wrong--perhaps a missing \item.

See the LaTeX manual or LaTeX Companion for explanation.

Type H <return> for immediate help.

...

l.651 \end{flushleft}

Try typing <return> to proceed.

If that doesn't work, type X <return> to quit.

! LaTeX Error: Something's wrong--perhaps a missing \item.

See the LaTeX manual or LaTeX Companion for explanation.

Type H <return> for immediate help.

...

l.651 \end{flushleft}

Try typing <return> to proceed.

If that doesn't work, type X <return> to quit.

! Missing $ inserted.

<inserted text>

$

l.680 }

\\

I've inserted a begin-math/end-math symbol since I think

you left one out. Proceed, with fingers crossed.

! You can't use `\eqno' in math mode.

\endmathdisplay@a ...\df@tag \@empty \else \veqno

\alt@tag \df@tag \fi \ifx ...

l.680 }

\\

Sorry, but I'm not programmed to handle this case;

I'll just pretend that you didn't ask for it.

If you're in the wrong mode, you might be able to

return to the right one by typing `I}' or `I$' or `I\par'.

! Missing $ inserted.

<inserted text>

$

l.680 }

\\

I've inserted something that you may have forgotten.

(See the <inserted text> above.)

With luck, this will get me unwedged. But if you

really didn't forget anything, try typing `2' now; then

my insertion and my current dilemma will both disappear.

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# Latex multicolumn problem

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