3
Question
In a school the weekly pocket money of 50 students is as follows
Draw a histogram & a frequency polygon on the same graph. Find the mode from the graph.
In a school the weekly pocket money of 50 students is as follows
Draw a histogram & a frequency polygon on the same graph. Find the mode from the graph.
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Solution
The correct option is
B
72
You can solve problem normally with Graph Paper.
However, in this particular you could additionally solve it much faster with simple logic -
Frequency = 50
Mode is between 25th and 26th item which is between 70 and 80.
As frequency of marks between 70 and 80 > frequency of marks between 80 and 90, mode must lie somewhere between 70 and 75.
Of the options given, 72 is the only option that satisfies this condition.
Thus, Mode = 72
The correct option is
B
72
You can solve problem normally with Graph Paper.
However, in this particular you could additionally solve it much faster with simple logic -
Frequency = 50
Mode is between 25th and 26th item which is between 70 and 80.
As frequency of marks between 70 and 80 > frequency of marks between 80 and 90, mode must lie somewhere between 70 and 75.
Of the options given, 72 is the only option that satisfies this condition.
Thus, Mode = 72
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