If 1-unit length represents 10 vehicles, how many vehicles are represented by a bar of height 6 units?

1-unit length refers to the standard measurement used to define the length of an object. It is typically represented by a specific unit such as 1 centimeter 1 meter or 1 inch depending on the system of measurement. This unit is used as a reference for measuring other lengths or distances.

In this chapter students learn how to collect organize and present data. Methods like tally marks tables and bar graphs are used to represent the data. Students also learn how to interpret the data and draw conclusions. These skills help in analyzing data and presenting it clearly for understanding.