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uLineaire regressie
De regressieformule voor lineaire regressie is:
y = A + Bx.
Voorbeeld: Luchtdruk tegen temperatuur
Voer lineaire regressie uit om
de termen en de
correlatiecoëfficiënt van de
regressieformule te bepalen
voor de aangegeven data.
Gebruik deze formule
vervolgens om te schatten wat
de luchtdruk is bij –5°C en de
temperatuur bij 1000 hPa.
Bereken tenslotte de
determinatie coëfficiënt (
r
2
) en
de monster covariantie
.
Tijdens de REG functie:
1
(Lin)
A B 1
(Scl) =
(Stat clear)
10 P1003 S
Telkens bij indrukken van de S toets om de ingevoerde data te registreren,
wordt het aantal data dat tot dat punt ingevoerd is,
aangegeven in de display (n waarde).
15 P 1005 S
20 P1010 S 25 P 1011 S
30 P 1014 S
Regressiecoëfficiënt A =
997,4
A X r r 1 =
Regressiecoëfficiënt B =
0,56
A X r r 2 =
Correlatiecoëfficiënt r =
0,982607368
A X r r 3 =
Luchtdruk bij ȕ5°C =
994,6
E D 5 F A X r r r 2 =
Temperatuur Luchtdruk
10°C 1003 hPa
15°C 1005 hPa
20°C 1010 hPa
25°C 1011 hPa
30°C 1014 hPa
1.
n=
REG
35


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