A dataset contains n=10n=10n=10 values with ∑xi=100\sum x_i = 100∑xi=100 and ∑xi2=1500\sum x_i^2 = 1500∑xi2=1500. What is the sample variance s2s^2s2?
505050
55.5655.5655.56
500500500
555.56555.56555.56