ECO 1102 Lecture 18: sig_figs_cheat_sheet

• School: University of Ottawa
• Department: Economics
• Course: ECO 1102
• Professor: David Gray

Document Summary

How to determine sig figs . : all non zero numbers are significant, ex. 982. 15 kg (cid:1) 5 sig figs: leading zeros are not significant, ex. 0. 00472 (cid:1) 3 sig figs: captive zeros are significant, ex. 10. 3 (cid:1) 3 sig figs: trailing zeros are not significant unless a decimal is present, ex, ex, ex. 100 (cid:1) 1 sig fig: (cid:1) 3 sig figs. How to determine sig figs for multiplying and dividing : when multiplying, dividing, squaring, etc. your final answer should only have as many sig figs as your least accurate measurement. 3 sig figs * 2 sig figs = 2 sig figs. 2 sig figs * 1 sig figs = 1 sig figs. Numbers ending in 0 (cid:1)(cid:1)(cid:1)(cid:1) do not round.