Representation of data

Example:-

1. 21, 22, 26, 27, 18, 5, 7, 8, 35, 31, 61, 70, 44, 41, 52, 56, 57, 56, 57, 56, 58

Draw a stem and leaf diagram foe the above data

a) find the median

b) the mode

0  5 7 8

1  6 8

2  1 2 6 7

3   1 5

4  1 4

5  2 6 6 7 8

6  1                  key : 1/6

7  0                  Represent : 16

a) median

= 32 + 35 / 2

= 66/2

= 33

b) mode

= 56

2. Draw a stem and leaf diagram to represent the data below:-

23, 6, 36, 24, 21, 15, 13, 15, 3, 21, 33, 9, 17, 15, 24, 21, 35, 14, 6, 18

0  3 6 6 9

1  3 4 5 5 5

2  1 1 1 3 4 4            key: 2/1

3  3 5 6                     Represent: 21