Lines of worst fit help in lab report
Hi all,
I’m doing a lab report and it has asked us to create a line of best fit that has an intercept of 0 so that the formula to calculate gravity from the gradient can be true. I have done this.
Then it asked us to plot the steepest line of best fit and flattest line of best fit using error bars. So the gradient for the steepest line is the highest, the flattest is the lowest and the line of best fit calculated beforehand is in the middle.
However, the line of best fit with the highest gradient is the first line I plotted which is not meant to happen. The error is probably in the values I measured in the experiment but it is too late to change it now.
Since this is a lab report, what do I do?
I only get a good graph when I don’t set the y intercept as 0, but then the equation to get gravity won’t be valid.
Do I just do this anyway and explain that this might be valid later in the report?
I’m doing a lab report and it has asked us to create a line of best fit that has an intercept of 0 so that the formula to calculate gravity from the gradient can be true. I have done this.
Then it asked us to plot the steepest line of best fit and flattest line of best fit using error bars. So the gradient for the steepest line is the highest, the flattest is the lowest and the line of best fit calculated beforehand is in the middle.
However, the line of best fit with the highest gradient is the first line I plotted which is not meant to happen. The error is probably in the values I measured in the experiment but it is too late to change it now.
Since this is a lab report, what do I do?
I only get a good graph when I don’t set the y intercept as 0, but then the equation to get gravity won’t be valid.
Do I just do this anyway and explain that this might be valid later in the report?
(edited 1 year ago)
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