Suppose a Class Obtained the Following Scores on a Test }">$\text { cellpadding="0" cellspacing="0" width }=" 34 \% \text { " border="0"> }$

Suppose a class obtained the following scores on a test:
}">$\text { cellpadding="0" cellspacing="0" width }=" 34 \% \text { " border="0"> }$
$$\begin{array} { l l } \\\text { Score } & \text { Frequency } \\90 & 2 \\80 & 6 \\70 & 13 \\60 & 9 \\50 & 3\end{array}$$ If there are multiple answers, separate them with a comma. If there is no answer, enter none. If necessary, round each answer to two decimal places. What is the mean? __________ What is the median? __________ What is the mode? __________