**Bar graphs**

Discrete: only definite values

Continuous: all values within range

**Histograms**

Frequency Polygon: to compare the trend of 2 histograms

How to draw? Split the top of each bar of the graph in half, connect the middle points of the top of the bars together.

Figure 1.1 - Frequency Polygon

*(source: Wikibooks)*

**Dot diagrams**

Rearranging of data in ascending order which makes it easier to find median term.

Things important in graphs

- scale

- accuracy

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