The Following are the scores of 20 students who took a calculus exam. Find the mean and standard deviation of the given data. Round to the nearest tenth, if necessary.

$$\begin{array}{|ccccccc|}\hline Score& 76& 82& 85& 90& 92& 95\\ Frequency& 5& 2& 3& 4& 3& 3\\ \hline\end{array}$$