Collection, Tabulation and Presentation of Grouped Data

In some investigations you may collect an awful lot of information. How can you use this raw data and make it meaningful? This section will help you to collect, organise and interpret the data efficiently.

Explaining your results

Imagine that you are asked to carry out a survey to find the number of pets owned by pupils in your school. You decide to ask 50 people, and record your results as follows:

0  2  1  2  0  4  1  0  2  2  1  6  1  1  2  8  0  12

2  1  2  0  3  2  0  1  3  0  1  4  0  3  0  2  3  6

3  3  0  1  2  0  1  1  3  0  2  0  3  2

You now have the information you need, but is this the most efficient way to collect and display the data?

Tallying

Tallying is a method of counting using groups of five.

 

Using the tally system to record results is much faster than writing out words or figures all the time. For example, if you had to investigate the most popular type of vehicle that passed the school gates, it would be easier to draw tally marks in one of three columns than write: car, car, lorry, bike, car, car, and so on.

By using a tally chart, the data is already collected into groups, and will not require further grouping at a later date.

Read more below-

SS1 Mathematics Third Term: Collection, Tabulation and Presentation of Grouped Data