# Error analysis for the Global Positioning System (Q5395703)

${\displaystyle 3\sigma _{R}={\sqrt {3^{2}+5^{2}+2.5^{2}+2^{2}+1^{2}+0.5^{2}}}\,\mathrm {m} \,=\,6.7\,\mathrm {m} }$