The following table shows the marks obtained by 100 students of class X in a school
during a particular academic session. Find the mode of this distribution.
Marks No. of students
Less then 10 7
Less than 20 21
Less than 30 34
Less than 40 46
Less than 50 66
Less than 60 77
Less than 70 92
Less than 80 100
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Apply formula of mode
l+(f1-f0)÷2f1-f0-f2*H
l+(f1-f0)÷2f1-f0-f2*H
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