The following data represent test scores of 36 randomly selected students from a large mathematics class.

Label all possible outliers using:
(a) (i) z-Score test, (ii) distribution-free test, and (iii) modified z-score test.
(b) Box plot.

67 63 39 80 64 95 90 93 21 36 44 66 100 66 72 34 78 66 68 98 74 81 71 100 60 50 81 66 90 89 86 49 77 63 58 43