The following are the marks of 20 students in a class test, out of 20. Put tally marks
and tabulate the data.
12, 15, 16, 8, 9, 10, 15, 14, 9, 11, 16, 15, 10, 18, 9, 15, 12, 14, 18, 9.
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Marks of students Tally Mark Frequency
5-10 IIIIÍ 5
10-15 IIIIÍ II 7
15-20 IIIIÍ III 8
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