A one-to-one pictograph represents each data item with exactly one picture, so the number of pictures in a category directly gives its frequency. Interpreting such a graph includes reading category labels and the key, comparing categories by more, fewer, or equal amounts, and finding totals or differences by counting and using addition or subtraction; keys in which one picture represents multiple items are outside this scope.
In a one-to-one pictograph, each picture stands for exactly 1 item. So, count the pictures to find the number in each category.
Example: Favorite Fruits
Key: 🍎 = 1 student
| Fruit | Students |
|---|---|
| Apples | 🍎 🍎 🍎 🍎 |
| Bananas | 🍎 🍎 🍎 |
| Oranges | 🍎 🍎 |
Find the number of students who chose apples.
Count the apple pictures: 4.
So, 4 students chose apples.
Compare apples and oranges.
Apples have 4 pictures, and oranges have 2 pictures.
Since , more students chose apples.
Find how many students chose apples or bananas altogether.
Apples: 4 students
Bananas: 3 students
So, 7 students chose apples or bananas altogether.
Find how many more students chose apples than oranges.
So, 2 more students chose apples than oranges.
Always read the category labels, check that the key shows one picture for one item, and then count, add, or subtract the pictures.
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