Question

Se dau lungimile
L1=12,20
L2=12, 60
L3=12,10
L4=12,50

Aflați
a) valuarea medie
b)eroarea

Dau coroana cui mi-o face bine.

Answer 1

Lmed=(L1+L2+L3+L4)/4
Lmed=(12,2+12,6+12,1+12,5)/4=12,35
deltaL1=|Lmed-L1|
deltaL1=|12,35-12,2|=0,15
deltaL2=|Lmed-L2|
deltaL2=|12,35-12,6|=0,25
deltaL3=|Lmed-L3|
deltaL3=|12,35-12,1|=0,25
deltaL4=|Lmed-L4|
deltaL4=|12,35-12,5|=0,15
delta Lmed=(deltaL1+deltaL2+deltaL3+deltaL4)/4
delta Lmed=(0,15+0,25+0,25+0,15)/4=0,2
eroarea=delta Lmed/L med * 100%
eroarea=0,2/12,35=0,01619433*100%=1,619%
eroarea=1,619%