Activity 1: Given 50 multiple-choice items in their final test in Mathematics, the scores of 30 students are the following: 23 38 28 46 22 20 18 34 36 35 45 48 16 22 27 25 29 31 30 25 44 21 18 43 21 26 37 29 13 37 Calculate the following using the given data. 3. P40 4. D2 5. D3

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