Collecting and recording dataPrint
Using the tally system to record your results is faster than writing out words or figures all the time.
If you record your findings in a tally chart, the data is already collected into groups, and you will not need to group it later on.
To investigate the most popular colour of car passing your house, it is easier to draw tally marks in one of five columns than to write red, blue, silver, silver, red, other, black etc.
If you use a tally chart, you could note down the colour of the cars as they pass, and find the total frequencies at the end of the one-hour period.
Look at the tally chart below. It shows how many CDs students in the maths class own. Fill in the frequency values in the right hand column.
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