Either a bar graph or circle graph. A lot of other graphs would work such as pictographs, but those two serve the purpose well.
You can definitely use a table or graph to what your findings. You can use a bar graph for this purpose for example.
To visually display information.
You could try drawing a vertical line as far from the points as you can get - though why you would want to do that defeats me.
In a circle graph it is easier to see shares of the total than in other kinds of graphs.
A graph whose purpose is inexplicable!
Either a bar graph or circle graph. A lot of other graphs would work such as pictographs, but those two serve the purpose well.
The main purpose of a line graph is to show changes and patterns in the changes
its a guideline
It can be - depends on the purpose.
You can definitely use a table or graph to what your findings. You can use a bar graph for this purpose for example.
To visually display information.
because
To compute the standard error in refractive index from a graph, calculate the standard deviation of the data points and divide it by the square root of the sample size. This will give you the standard error in your refractive index measurement.
Any graph can be used for such a purpose.
The best graph for the purpose of comparing raw numbers between different qualitative categories would be a bar graph or some variation thereof.
You could try drawing a vertical line as far from the points as you can get - though why you would want to do that defeats me.