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:

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7.5

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8.5

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Solution

The correct option is B 7.5
On 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 = $\frac{(7 + 8)}{2}$
= $\frac{15}{2}$
= $7.5$

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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:

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

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:

The correct option is B 7.5
On 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 = $\frac{(7 + 8)}{2}$
= $\frac{15}{2}$
= $7.5$