# How do I adjust the mean value to fit the standard error?

I have the following data set:

$3.262 \\ 3.345\\3.279\\3.207\\3.366\\3.311\\3.384$

I have to find the mean and the standard error. Here is what I have done so far:

Mean: $3.307571429$

Standard Error: $0.0237886$

I am supposed to round the standard error to two significant figures. That means my standard error will be: $0.024$

In lecture we were told that we have to adjust the mean value to fit the digits of the standard error. This is what I am having trouble with. Do I have to round the last digit of the mean? In other words, should my result be:

1. $3.308 \pm0.028$

or

1. $3.307 \pm 0.028$