Q2 of 55 Page 364

Heights (cm) of some students of our class are given below.

131, 130, 130, 132, 131, 133, 131, 134, 131, 132, 131, 133, 130, 132, 130, 133, 135, 131, 135, 131, 135, 130, 132, 135, 134, 133


Let us find the mode of heights of students.

Mode is just the set of data values that appears most often.

Let us arrange the data values in ascending order so that observation can be made easily.


130, 130, 130, 130, 130, 131, 131, 131, 131, 131, 131, 131, 132, 132, 132, 132, 133, 133, 133, 133, 134, 134, 135, 135, 135, 135


Note the appearances now,


130 appears → 5 times


131 appears → 7 times


132 appears → 4 times


133 appears → 4 times


134 appears → 2 times


135 appears → 4 times


⇒ 131 appears most of the times, that is, 7 times.


Thus, mode is 131.


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 1

Paid amounts of a day of our 16 friends for going to school and other expenditures are 15, 16, 17, 18, 17, 19, 17, 15, 15, 10, 17, 16, 15, 16, 18, 11

Let us find the mode of paid amounts of a day of our friends.

 3

Let us find the mode of data given below :

i. 8, 5, 4, 6, 7, 4, 4, 3, 5, 4, 5, 4, 4, 5, 5, 4, 3, 3, 5, 4, 6, 5, 4, 5, 4, 5, 4, 2, 3, 4


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 4

The frequency distribution table shows the selling prices of shoes of a special company of shoe shop of our village.