when might you want to use a scale on a graph that does not start at 0
When your data starts with a much larger number.
thanks:D
You're welcome.
You might want to use a scale on a graph that does not start at 0 when you want to focus on specific ranges or trends in the data without including the baseline value of zero. This type of scaling is commonly known as a "non-zero baseline" or "truncated scale." It can be useful in certain scenarios to better illustrate and analyze small differences or patterns in the data.
For example, in financial graphs, stock prices are often presented with a truncated scale to highlight fluctuations in the stock's value, emphasizing changes rather than absolute values. Similarly, in scientific research, graph scales may not start at zero to highlight changes in a particular range of variables that might otherwise appear too small to visualize.
However, it's important to be cautious when using a non-zero baseline scale because it can potentially mislead or distort the data if not properly communicated. It's crucial to clearly indicate on the graph that the scale does not begin at zero to prevent misinterpretation.
When using a non-zero baseline scale, it's recommended to clearly label the scale and provide a visual indicator, such as a broken line or clear labeling, to emphasize that the zero value is not included. Additionally, it's advisable to include a brief explanation or a note to explicitly state that the scale is truncated to avoid any misunderstandings.