Question

a steel tape measure calibriated for use @ 20C will yield length in error for 30 C. would we need to reduce or increase the lengths measured @ 30 C. please explain

Answer 1

I woudl assume you would need to decrease the length of measurments taken from a tape measure calabriated for a tempature that is lower than the enviornment that you are taking the measurements in.

Answer 2

i thought so too but it is increase

Answer 3

well thats kinda strange, I have never ran into a problem like that. I was just doing my best to reason it out.

Answer 4

thank you. quick question do you know if in standard deviation we keep units

Answer 5

yes it should be the same unit as your mean. or x-bar depending on what formula you are using.

Answer 6

what about deviation

Answer 7

yea I would keep units for anything you do in chemistry class.

Answer 8

thank you

Answer 9

anytime.