Here is your data: 2, 6, 7, 8, 9, 9, 10, 10, 4, 6, 1. Calculate the range of these data. 2. Calculate the mean of these data. (You will need this to calculate the variance and standard deviation) 3. Calculate the variance of these data using the symbols and formula; also use columns to show all calculations. 4. Calculate the standard deviation using the symbols and formula. Build off the work you did for the variance. Formulas