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Question

In a mathematis test following marks were obtained by 40 students of class VI. Arrange these marks in a table using, tally marks.
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
(i) Find how many students obtained marks equal to or more than 7?
(ii) How many students obtaned marks below 4?

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Solution

The Frequency Distribution Table is :
Marks Tally Marks Frequency
1 II 2
2 III 3
3 III 3
4 IIII II 7
5 IIII I 6
6 IIII II 7
7 IIII 5
8 IIII 4
9 III 3

(i) 12 students obtained marks equal to or more than 7.
(ii) Only 8 students obtained marks below 4.

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