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 Four is denoted by ‘||||’ tally marks.
 Five is not denoted by ‘| | | | |’ tally marks in the graphs. For the number 5,
draw four vertical lines (||||) with a diagonal (\) line through it.

Example - 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 data.
Answer:

Number of family Tally marks Frequency
members
3 IIII 4
4 IIII 4
5 II 7
6 III 3
7 II 2

Total 20