What does the vertical (Y) axis represent in a graphical data display?

The vertical (Y) axis in a graphical data display typically represents a range of numerical values with equal intervals. This is where the dependent variable is often plotted, showing how it changes in response to variations in the independent variable, which is usually displayed along the horizontal (X) axis. By displaying numerical values with equal intervals, the Y-axis allows for clear comparisons and visual representation of data trends, making it easier to interpret relationships between the two variables being analyzed.

In mathematical and scientific graphs, maintaining equal intervals on the Y-axis is crucial because it helps ensure that the visual representation accurately reflects the underlying data, allowing viewers to draw meaningful conclusions from the graph. This helps in both identifying trends and making predictions based on the observed data.