The Following Is a Partial Relative Frequency Distribution of Grades

Multiple Choice

The following is a partial relative frequency distribution of grades in an introductory statistics course. $\begin{array}{|l|c|}\hline \text { Grade } & \text { Relative Frequency } \\\hline \text { A } & .22 \\\hline \text { B } & ? \\\hline \text { C } & .18 \\\hline \text { D } & .17 \\\hline \text { F } & .06 \\\hline\end{array}$
Find the relative frequency for the B grade.

A) .78
B) .27
C) .65
D) .37
E) .47