Interpret scaled bar graphs
These bar graphs are leveled up! 🚀 In a scaled bar graph, the numbers might count by 2s, 5s, 10s, or even more. We have to be super detectives to read the scale correctly!
Concept
A scaled bar graph is just like a regular bar graph, but the scale (the numbers on the side) doesn't just count by ones. This allows the graph to show much larger numbers without being huge. **How to Read a Scaled Bar Graph:** 1. **Read the Title:** First, always see what the graph is about (e.g., 'Trees Planted in a Park'). 2. **Check the Scale (Most Important!):** Look at the numbers on the vertical axis. What are they counting by? Do they go 0, 2, 4, 6...? Or 0, 5, 10, 15...? This is the 'scale'. 3. **Read the Bars:** * Find the bar you want to read (e.g., 'Oak Trees'). * Follow the top of the bar across to the scale. * Read the number. **Be careful!** If the bar is halfway between two numbers on the scale, its value is halfway between. For example, on a scale that counts by 10s, a bar between 40 and 50 would be 45. **Example:** A bar graph shows 'Favorite Sports'. The scale counts by 5s (0, 5, 10, 15, 20...). * The 'Soccer' bar stops at the line for 20. So, 20 people chose soccer. * The 'Basketball' bar stops halfway between 10 and 15. So, about 12 or 13 people chose basketball (or you might need to be more precise based on the halfway mark). **Key Idea:** The scale is the secret code of the graph. Read it before you read the bars! It tells you the value of each step up the graph.
Try it
Practice: Interpret scaled bar graphs.