By writing Boolean statements within your Excel workbook ,

How many students achieved a grade of B or better in Programming?

\begin{tabular}{|c|l|r|} \hline & \multicolumn{1}{|c|}{ A } & \multicolumn{2}{c|}{ B } \\ \hline 1 & Grade & Count \\ \hline 2 & NC & \multicolumn{2}{|}{3} \\ \hline 3 & CR & 3 \\ \hline 4 & F & \\ \hline 5 & D & \\ \hline 6 & C & \\ \hline 7 & C+ & \\ \hline 8 & B & \\ \hline 9 & B+ & 2 \\ \hline 10 & A & \\ \hline 11 & A+ & \\ \hline \end{tabular}