Idea 16of 22Builds onTwo fair samples can differ a little
Tally, then count
How do you turn a pile of answers into a table?
Today you'll discover
- how to tally in bundles of five
- what a frequency is
- how to check the total
Think first25 students said their favourite season
How many students chose summer?
Decide first, then press Next. Count each bundle as 5.
A table for “Which season do you like best?”, 25 students asked. Rows: summer, winter, fall, spring, each with tally marks in bundles of five. Then a count column: 12, 6, 4, 3, and a total row: 25. The last step shows the pet tallies: dog, cat, fish, bird.
See the whole ideathe big idea and the key word, in one place
The big idea
Tally answers in bundles of 5; each count is a frequency, and the counts add to the total.
Bundles of fiveDraw 4 marks upright, then the 5th across them. Bundles count quickly: 5, 10, 15, then the single marks.
Easy to get wrongIf the counts add to 24 but 25 people were asked, one answer was missed. Find it before you go on.
Key words
- tally
- a mark for each answer, drawn in bundles of 5
- frequency
- how many times an answer was given: its count
- frequency table
- a table of each answer, its tally and its count, with a total
Ready to use it?
- Tally answers and fill in a frequency table.
- Check that the counts add to the number asked.