EXERCISE 9.1 a 1. In a Mathematics test, the following marks were obtained by 40 students. Arrange these marks in a table using tally marks. 2 4 4 8 3 7 5 1 6 5 7 4 5 9 3 7 6 1 5 2 5 8 6 7 3 8 9 4 2 8 6 6 4 6 4 5 9 7 6 4 (a) Find how many students obtained marks equal to or more than 7. (b) How many students obtained marks below 4?
Answers
Answer:
Correct option is
A
12
In a mathematics test following matrix were obtained by 40 students of class VI.
Arrange these marks in table, tally marks
Marks Frequency Tally marks
1 2 ||
2 3 |||
3 3 |||
4 7 ||||
5 6 ||||
6 7 ||||
7 5 ||||
8 4 ||||
9 3 ||||
Total 40
No. of students obtained marks equal to or more than 7. (7,8,9 marks)
is =5+4+3
=12.