Bar graphs
Japanese school year: Elementary 3
What you learn
Learn how to read and construct bar graphs, representing numerical quantities through the length of bars while choosing appropriate scale intervals. Bar graphs are essential for comparing quantities across different categories. Basic experience with data tables and the ability to interpret scale units will support your learning.
Key points
This describes the purpose and features of a bar graph. It represents quantities through the length of bars, making it ideal for comparing amounts across categories and identifying the largest value.
This explains how to set the axis scales on a bar graph. Keep the scale uniform for each grid mark, and if all values are large with small differences, use a wavy line to omit unused values.
This states the standard convention for ordering bars. Bars are generally arranged from largest to smallest with "Other" at the end, except for time-series data which follow chronological order.
Choose a set to practice.