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Probability

Question
CBSEENMA9003824

Find the mean of the following marks of 20 students on a screening test, (out of 100) 76, 44, 45, 87, 71, 72, 82, 83, 41, 32, 75, 32, 46, 78, 17, 70, 84, 12, 77, 74

Solution

Mean
fraction numerator table row cell 76 plus 44 plus 45 plus 87 plus 71 plus 72 plus 82 end cell row cell plus 83 plus 41 plus 32 plus 75 plus 32 plus 46 plus 78 end cell row cell plus 17 plus 70 plus 84 plus 12 plus 77 plus 74 end cell end table over denominator 20 end fraction
equals 1198 over 20 equals 59.9