\\begin{tabular}{|c|c|c|c|c|c|c|c|c|c|c|c|c|c|} \\ Q1 & \\begin{tabular}{l|l} 12 \\\\ marks \\end{tabular} & & & & & & & & & & & & \\\\ \\ \\multicolumn{14}{|c|}{\\begin{tabular}{l} During the first quarter, the number of rejected units produced per \\\\ week by a group of workers was as follows: \\end{tabular}} \\\\ \\ Worker & & A & B & C & D & \\( E \\) & \\( \\mathrm{~F} \\) & \\( \\mathrm{G} \\) & \\( \\mathrm{H} \\) & 1 & J & K & \\( \\mathrm{L} \\) \\\\ \\ \\begin{tabular}{l} No. \\\\ Rejected \\end{tabular} & & 84 & 76 & 68 & 64 & 71 & 77 & 62 & 80 & 64 & 64 & 75 & 66 \\\\ \\ \\multicolumn{14}{|c|}{\\begin{tabular}{l} For the given data, \\\\ compute \\end{tabular}} \\\\ \\ \\multicolumn{14}{|l|}{\\begin{tabular}{l} a) the \\\\ mean \\end{tabular}} \\\\ \\ \\multicolumn{14}{|c|}{ b) the variance } \\\\ \\ \\begin{tabular}{l} c) the sta \\\\ deviation \\end{tabular} & ndard & & & & & & & & & & & & \\\\ \\ \\end{tabular}