I have computed the mean and standard deviation of a variable in a dataset, and I wish to represent these values in a report. Is the following the correct way to go about this?
$1.23 \pm 0.52 \sigma$,
where the mean is 1.23 and the standard deviation is 0.52.
Alternatively, would a standard error be a more appropriate thing to report? The results are classification accuracies and the time taken to compute them.