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.

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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