Create bar graphs

A bar graph represents frequencies or other numerical amounts for distinct categories, with labeled axes, equal-width bars, and a scale whose intervals allow each value to be located accurately. Its structure shows that bar height or length corresponds to quantity, while separated bars preserve the distinction between categories and support comparisons; this does not include histograms for continuous, interval-based data or more advanced statistical displays.

Detailed Explanation: Create bar graphs

A bar graph shows how much belongs to each category. The categories go on one axis, and the numbers go on the other axis.

Example: A class records students’ favorite fruits.

Fruit	Number of students
Apples	4
Bananas	7
Grapes	3
Oranges	5

Step 1: Draw and label the axes

For a horizontal bar graph:

Write the categories along the vertical axis.
Write the numbers along the horizontal axis.
Label the horizontal axis Number of students.
Start the number scale at $0$ .

Step 2: Choose a scale

The greatest value is $7$ , so use a scale from $0$ to $7$ . Each interval of $1$ represents one student.

Step 3: Draw the bars

Draw equal-width bars. Make each bar’s length match its category’s number. Leave spaces between the bars.

Number of students
0   1   2   3   4   5   6   7
|---|---|---|---|---|---|---|---|

Apples   | ████
Bananas  | ███████
Grapes   | ███
Oranges  | █████

The Apples bar ends at $4$ , so it represents $4$ students. The Bananas bar ends at $7$ , so it represents $7$ students. The bars for Grapes and Oranges end at $3$ and $5$ .

Check that:

Both axes are labeled.
The scale has equal intervals.
The bars have equal widths.
The bars are separated.
Each bar starts at $0$ and reaches the correct number.

Learn by doing: Create bar graphs

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Graphing - Create Bar Chart from Data (Text)

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