A tally chart worksheets is a table with tally marks to show a valuable data set. A tally chart is one method of collecting data with tally marks. Tally marks are frequencies, occurrences, or total numbers being measured for a specific category in a data set. Tally charts are used throughout the world and are great visual representations of group observations.
The example demonstrates how it is quicker and clearer to interpret data when tally marks are used, instead of re-writing the word ‘blue’ every time a kid says that this is their favorite color.
Grouping the results in 5s then makes it easier to add up the total frequency at the end, rather than adding up each individual dash. It is also helpful to include a total (or frequency) column so that the totals can be added up at the end of the investigation.
In Year 3 teachers will introduce kids to tally charts by giving them simple examples to fill out within the classroom. Example topics could include the favorite hobbies or favorite food of each kid.
Teachers will also explain the benefit of recording data in a tally chart. Once kids have started to use tally charts in the classroom, teachers might show them how the data they have collected can be represented in other formats, such as bar charts and pictograms.
It is important that kids are comfortable with tally charts, as they will continue to interpret data from them throughout KS2.
It is likely that the KS2 Maths SATs questions will require kids to know how to use and interpret tally charts. Therefore, it is imperative that kids have had enough practice to be comfortable doing this independently.