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Question

# The marks (out of 15) obtained by 20 students in a science test are listed below: 7, 10, 13, 4, 2, 8, 9, 12, 7, 2, 0, 3, 1, 15, 6, 5, 14, 11, 8, 15 The median of this data is:

A
7
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B
7.5
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C
8
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D
8.5
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Solution

## The correct option is B 7.5On arranging the data in ascending order, it becomes 0, 1, 2, 2, 3, 4, 5, 6, 7, 7, 8, 8, 9, 10, 11, 12, 13 , 14, 15, 15 So the median will be the average of 10th and 11th values. 10th value = 7 11th value = 8 Median = (7+8)2 = 152 = 7.5

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