A scatter plot
When points are marked on a graph, a line is often drawn across the dots plotted. A line of best fit is a straight line that goes through as many of such points as possible.
You want to draw a line through your plotted points and try to get equal amounts on either side.
It is called the line of best fit
Yes, it shows the data in a different way
The answer depends on the relationship between X and z. This may not be linear, in which case the conversion may need to take account of turning points.
If it is plotted correctly, there is no reason for it to be anything but accurate.
The advantage is being given a straight answer, but in a graph it doesn't give you a straight answer, because there is a possibility of data being in between the plotted points.
Protracto
Military protractor
Military protractor
Any relationship in which at least one pair of measurements has a different ratio to that for other pairs. Equivalently, it is a relationship in which all the points cannot be plotted as a straight line through the origin.
The advantage of using a graph is being able to give more evidence of your work. The disadvantage is there being a possibility of data being in between the plotted points, that you may not even realize.
Any metric or non-metric units can be represented by points on the plotted line.
The graph is called the 'line of best fit'
Scatter Graph
The answer depends on what relationship - if any - exists between the points in the table. There need not be any relationship.
Incorrectly plotted points.