Data Collection and Processing (DCP) 3
Presenting Processed Data
- Processed data should be presented in a graph. This graph should be linearised if possible. The graph should be drawn using Graphical Analysis. If not possible to linearise the function then a curve can be plotted, however this makes the analysis more difficult so the following points are for straight lines only.
- The graph must have heading, axis labels and units.
- Independent variable is normally on the x axis although it is sometimes more convenient to plot a graph the other way.
- Graph must include error bars.
- A best fit line should be plotted automatically.
- The equation of the line must be displayed (y=mx+c).
- Manually fit the steepest and least steep lines that fit the error bars.
- Quote the gradient and calculate the uncertainty in it from the steepest and least steep lines.
