The marks obtained by 9 students in a test are: 5, 8, 7, 9, 6, 7, 8,7, 10.
Determine: (i) Mode of the marks, (ii) Number of students scoring above average.
Show answer & explanation
Correct answer: D
Explanation
The correct answer is Option 4 i.e. Mode = 7, Number of students scoring above average = 4.
Ascending order: 5, 6, 7, 7, 7, 8, 8, 9, 10
(i) Mode of marks = 7 (frequency 3, which is the highest)
(ii) Average score = (5 + 6 + 7 + 7 + 7 + 8 + 8 + 9 + 10)/9 = 67/9 ≈ 7.44
Students above average marks: 8, 8, 9, 10 → 4 students