Q1 of 9 Page 234

The number of members in 20 families are given below:

4, 6, 5, 5, 4, 6, 3, 3, 5, 5, 3, 5, 4, 4, 6, 7, 3, 5, 5, 7.


Prepare a frequency distribution of the data.

Arranging the members in ascending order, we get


3, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 5, 5, 5, 6, 6, 6, 7, 7


The frequency distribution table is given below:







































Number of Members



Tally Marks



Number of Families (Frequency)



3



IIII



4



4



IIII



4



5





7



6



III



3



7



II



2




Total



20



More from this chapter

All 9 →
2

A dice was thrown 30 times and the following outcomes were noted:

2, 1, 2, 4, 6, 1, 2, 3, 6, 5, 4, 4, 3, 1, 1, 3, 1, 1, 5, 6, 6, 2, 2, 3, 4, 2, 5, 5, 6, 4.


Prepare a frequency table.

 3

The following data gives the number of children in 40 families:


1, 2, 6, 5, 1, 5, 1, 3, 2, 6, 2, 3, 4, 2, 0, 4, 4, 3, 2, 2, 0, 0, 1, 2, 2, 4, 3 2„1, 0, 5, 1, 2, 4, 3, 4, 1, 6, 2, 2.


Represent it in the form of a frequency distribution.

 1

The marks obtained by 40 students of a class in an examination are given below:

8, 47, 22, 31, 17, 13, 38, 26, 3, 34, 29, 11, 22, 7, 15, 24, 38, 31, 21, 35, 42, 24, 45, 23, 21, 27, 29, 49, 25, 48, 21, 15, 18, 27, 19, 45, 14, 34, 37, 34.


Prepare a frequency distribution table with equal class intervals, starting from 0-10 (where 10 is not included).

 2

The electricity bills (in rupees) of 25 houses of a certain locality for a month are given below:

324, 700, 617, 400, 356, 365, 435, 506, 548, 736, 780, 378, 570, 685, 312, 630, 584, 674, 754, 776, 596, 745, 565, 763, 472.


Arrange the above data in increasing order and form a frequency table using equal class intervals, starting from 300-400, where 400 is not included.