8 | 1 | 3 | 7 | 6 | 5 | 5 | 4 | 4 | 2 |
4 | 9 | 5 | 3 | 7 | 1 | 6 | 5 | 2 | 7 |
7 | 3 | 8 | 4 | 2 | 8 | 9 | 5 | 8 | 6 |
7 | 4 | 5 | 6 | 9 | 6 | 4 | 4 | 6 | 6 |
Answer:
The table with tally marks is shown below
(a) Here, we have to find out the students who obtained marks equal to 7 or more than 7. So, we have to add the number of students who obtained marks equal to 7 or more than 7 i.e. 7, 8 and 9. \[\therefore \] Number of those students = 5 + 4 + 3 = 12 Hence, 12 students obtained marks equal to 7 or more than 7. (b) Here, we have to find out the students who obtained marks below 4. So, we have to add the number of students who obtained marks below 4 i.e. 1, 2 and 3. \[\therefore \] Number of those students = 3 + 3 + 2= 8 Hence, 8 students obtained marks below 4. Makrs Tally marks Number of students 1 || 2 2 ||| 3 3 ||| 3 4 7 5 6 6 7 7 5 8 4 9 ||| 3 Total 40
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