
\magnification=\magstep1

$$
  {\rm time\ } \quad = \quad {\rm best\ estimate\ } \pm {\rm \ uncertainty}
$$


$$
\mu \quad = \quad {  {\sum_{i=1}^N { \thinspace x_i } } \over 
                     {N\phantom{^2}} }
$$

$$
\sigma \quad = \quad \sqrt{ {  {\sum_{i=1}^N { \thinspace \left( { x_i - \mu }\right)^2  } } 
                    \over
                        {N - 1} } }
$$


$$ 
{\rm time\ } t \quad = \quad 4.25 \pm 0.04 \quad {\rm seconds}
$$

$$ 
{\rm distance\ } L \quad = \quad 1.031 \pm 0.017 \quad {\rm meters}
$$


$$
  \omega \quad = \quad { {2 \pi} \over {P} }
$$


$$
  \omega \quad = \sqrt { {k} \over {m} }
$$


\bye
