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Step-by-step explanation:
Marks No. of students(f) Cumulative Frequency
Below 10 6 6
Below 20 15 21
" " 30 29 50
" " 40 41 91
" " 50 60 151
" " 60 70 221
After this, Plot the Cumulative Frequency in the X-axis and Plot the Marks in the Y-axis.
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