Available when Mode is set to Trend Line.
Choose from the drop down list:
Linear - represent the relationship between variables as a straight line.
This is useful where data increases or decreases along a straight line, at a constant rate.
Quadratic - represent the relationship between variables as one curve in a line.
This is useful where data fluctuates up then down, or vice versa.
Cubic - represent the relationship between variables as two curves in a line.
This is useful where data fluctuates up and down.
Gaussian - represent the relationship between variables as a bell-shaped distribution.
This trend line is also known as normal distribution and is characterised by its symmetric shape around the mean.
This is useful for showing a symmetrical plot of data around its mean value, where the width of the curve is defined by the standard deviation.