2. The marks obtained by 12 students in an examination (out of 50) are given below
18, 35. 2. 27. 40, 0, 21, 33, 27, 8, 36, 23
Find the mean marks
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Answer:
Mean = sum of all observation / no. of all observation
18+35+2+27+40+0+21+33+27+8+36+23+ / 12
270/12
22.5 is the mean mark answer
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