Quick question on plotting graph/stuff

[ibysaiyan]

Homework Statement

Hi there
I have got my pratical tomorrow anyhow there is one thing of which i am bit iffy about. I am given a question where it asks me to plot graph with given data and error bars as well.Next question asks me to draw two lines (a line of steepest and least steep ) through the origin or wherever it starts.Would i plot both lines by having them going through my error bars or how?is this true method to draw both of the extreme lines?
Note:The actual graph is a smooth continuous curvature.
Thanks.

Homework Equations

The Attempt at a Solution

 

[Borek]

Would i plot both lines by having them going through my error bars

More or less that's the idea.

 

[Stonebridge]

I don't see how or why you should have to draw a straight line (with gradient to be estimated) through a set of points that is a smooth curve.
Is it supposed to be a curve; or has it come out looking that way but should really be a straight line?