Find the variance for the given sample data. Round your answer to one more decimal place than the original data. $\begin{array}{llllll}7 & 7 & 2 & 5 & 1 & \square\end{array}$ A. 7.8 B. 7.7 c. 11.8 D. 6.2 (1) Time Remaining: 01:40:13

Step 1 ：Given data is \([7, 7, 2, 5, 1]\)

Step 2 ：Calculate the mean (average) of the data

Step 3 ：Subtract the mean from each data point to get the deviation of each data point

Step 4 ：Square each deviation

Step 5 ：Find the mean of these squared deviations

Step 6 ：Round the result to one more decimal place than the original data

Step 7 ：The variance for the given sample data is \(\boxed{7.8}\)