1Find the variance of the following set of numbers 2 4 6 1 7

1.Find the variance of the following set of numbers (2, 4, 6, 1, 7, 1, 5, 9, 5, 2) ?

2.Find the z-score for 3 of the following set of numbers (1, 2, 3, 3, 3, 4, 5, 7, 8, 8) ?

3.Find the zscore for 9 of the following set of numbers (7, 9, 9, 9, 10, 11, 12, 12, 14, 14 ) ?

4.Find the z-score for 4 of the following set of numbers (2, 4, 6, 1, 7, 1, 5, 9, 5, 2) ?