The times, \(t\) seconds, taken to swim 100 m were recorded for a group of 9 swimmers and were found to be as follows.

95, 126, 117, 135, 120, 125, 114, 119, 136

1. Find the values of \(\Sigma(t - 120)\) and \(\Sigma(t - 120)^2\).
2. Using your values found in part (i), calculate the variance of \(t\).