Here we will learn how to use of tally marks.
When the observations are large, it may not be easy to find the frequencies by simply counting, so we make the use of bass (|, \) called the tally marks.
Tallies are usually marked in bunches of five.
The first four tallies are marked vertically. The fifth tally in a bunch is marked diagonally across the earlier 4.
The illustration of the example will help us to learn the use of tally marks:
The scores obtained in 20 throws of a dice are:
5, 4, 3, 2, 1, 1, 2, 5, 4, 6, 6, 6, 3, 2, 1, 4, 3, 2, 2, 4
Prepare the frequency table for the above scores.
Frequency table of scores in 20 throws.
1 occurs 3 times
2 occurs 5 times
3 occurs 3 times
4 occurs 4 times
5 occurs 2 times
6 occurs 3 times
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