If you want to know what the most popular flavor of ice cream is for some group of people you might ask them one by one and keep a tally of their answers. Each time you get a response, you would mark down that response on your tally sheet. You might set up your tally sheet and record the responses like this:
FLAVOR | TALLY | TOTAL |
vanilla | 12 | |
chocolate | 9 | |
strawberry | 17 | |
chocolate chip | 8 | |
triple chocolate chip | 28 | |
1) How many more people picked strawberry as their favorite than chocolate? ANSWER: 17 - 9 = 8 2) How many more people picked triple chocolate than vanilla? ANSWER: 28 - 12 = 16 3) How many people in all selected vanilla, strawberry, or chocolate? ANSWER: 12 + 17 + 9 = 38
Let's say you want to know what the favorite colors for all the people you know are. You could keep track of this using a tally.
COLOR | TALLY | TOTAL |
blue | 21 | |
red | 12 | |
yellow | 14 | |
purple | 18 | |
orange | 16 | |
1) How many more people picked blue as their favorite than purple? ANSWER: 21 - 18 = 3 2) How many more people picked orange than red? ANSWER: 16 - 12 = 4 3) How many people in all selected red, yellow, or orange? ANSWER: 12 + 14 + 16 = 42