1. Bar Graph/chart: This type of visual representation is used to compare the quantities of different categories, with each bar representing a specific category and its height reflecting the value or frequency of that category.

2. Pie Chart: Pie charts are circular graphs that display the proportional size of different categories as segments or slices of the larger whole. This type of visualization is often used for showing the distribution of a single data set.
### Instruction:
Name two types of data visualization techniques.

### Response:
