How do we get deviation from the expected return?

How do we get squared deviation?

And How do I get the product?

How Do I get a variant?

And how do I get standard deviation

Please answer all in Excel.

\begin{tabular}{|c|c|c|c|c|c|c|c|} \hline 4 & A & B & c & D & E & G & H \\ \hline \multicolumn{8}{|l|}{1} \\ \hline 2 & & (1) & (2) & (3) & (4) & (5) & \\ \hline \multicolumn{8}{|l|}{3} \\ \hline 4 & & & & Return on & \multicolumn{2}{|l|}{ Deviation from } & (2)(5) \\ \hline 5 & & State of the Economy & Probability & Stock & the Exp Return & Squared Deviation & Product \\ \hline 6 & & Recession & 33% & 13% & 21.7% & 0.046944444 & 0.015648 \\ \hline 7 & & Normal & 33% & 16% & 7.3% & 0.005377778 & 0.001793 \\ \hline 8 & & Boom & 33% & 23% & 14.3% & 0.020544444 & 0.006848 \\ \hline \multicolumn{8}{|l|}{9} \\ \hline \multicolumn{8}{|l|}{10} \\ \hline 11 & & Expected Return = & & 8.67% & & Variance = & 0.02429 \\ \hline 12 & & & & = SUMPRODUCT ( & (C6:C9,D6:D9) & Standard Deviation & 15.58% \\ \hline \end{tabular}