The marks obtained by 9 students in a class test are recorded below: 9, 8, 7, 5,7, 6, 8, 9 and 7. What is the median mark?
The median mark is the middle mark when the marks are arranged in ascending order. First, let's arrange the marks in ascending order: 5, 6, 7, 7, 7, 8, 8, 9, 9
Since there are 9 students, the median mark is the average of the 4th and 5th marks. The 4th mark is 7 and the 5th mark is also 7, so the median mark is 7.
Therefore, the answer is 7.
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