In a class test in mathematics , 10 students scored 75 marks , 12 students scored 60 marks, 8 students scored 40 marks and 3 students scored 30 marks. Find the mean of their score.
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Answer:
The mean is 56.97
Step-by-step explanation:
The mean is the average of the numbers, or the sum divided by the count.
Mean = (10 x 75) + (12 x 60) + (8 x 40) + (3 x 30) / (10 + 12 + 8 + 3) =
= (750 + 720 + 320 + 90) / 33 = 1880 / 33 = 56.97
Therefore the mean is 56.97.
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the answer is given in the above given
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