Isiqondiso kumsebenzisi

Izinombolo Ezishintshayo Ezisasanxande
• Ifomula yezinombolo ezishintshayo ezisasanxande ithi: y = A + B x + C
x
2
.
Isibonelo:
Yenza isibalo sezinombolo ezishintshayo ukunquma imibandela yefomula
yezinombolo ezishintshayo.
x
i
y
i
29 1.6
50 23.5
74 38.0
103 46.4
118 48.0
Okulandelayo sebenzisa ifomula ye-regression ukuze ulinganise amavelu
e- yˆ (ivelu elinganisiwe ye- y ) ka-x
i
= 16 no- xˆ (ivelu elinganisiwe ye- x ) ka-
y
i
= 20.
Ku-REG Mode:
(Quad)
(CLR) (Scl) (Stat clear)
29 1 6 50 23 5 74 38 0 103 46 4 118
48 0
Izinombolo Ezishintshayo Neziphindaphindayo A = -35.59856934
(S-VAR) (A) -35.59856934
Izinombolo Ezishintshayo Neziphindaphindayo B = 1.495939413
(S-VAR) (B) 1.495939413
Izinombolo Ezishintshayo Neziphindaphindayo C = -6.71629667 × 10
-3
(S-VAR) (C) -6.71629667×10
-3
yˆ lapho x
i
engu-16 = -13.38291067
16 (S-VAR) ( yˆ)
-13.38291067
43