Physics P5 questions

[azimsha]

how to find the error in gradient if the slope is negative? Let say the best fit gradient is -0.017 and worst fit line is -0.024, i am just plucking two value randomly, but the main concern is the negative. How to find uh?? is it like -0.017- (-0.024) which make the - and - become +..Is that a right way??

[Hwa1]

I think you just find the difference between the two

[Meticulous]

Find the difference between best and worst fit and divide by 2

[falafail]

Find the difference between best and worst fit and divide by 2

you don't divide by two...?

[Meticulous]

I just said divide by 2.

[Hwa1]

DONT divide by 2

[Meticulous]

Divide by 2 if you have lines of worst and biggest fit.

Dont divide by 2 if you have line of best and worst, or best and biggest.

[falafail]

Divide by 2 if you have lines of worst and biggest fit.

Dont divide by 2 if you have line of best and worst, or best and biggest.

where'd you get that from? 
you only divide by two if you use the gradients of the SHALLOWEST and STEEPEST worst acceptable lines.
if you're using the line of best fit with either one of the worst acceptable lines, you don't divide by two.

[Meticulous]

@falafail-that was what i was trying to say-lol.