Let’s interpret the data as it’s written: 80, 90, 0, check, check-minus, absent, 55, 87, absent, 77, one day late 90, check, 90, check, 12, 91, check, check, 88, absent, 84, check, check, check, check, check, absent, 3.5, B+, 3.8, 2.1, 4.0, 3.5, 3.5, check, check, check, 88. A collection of unrelated data points helps no
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