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Ejemplo: Presión atmosférica vs. temperatura
Lleve a cabo la regresión lineal
para determinar los términos de
la fórmula de la regresión lineal y
coeficiente de correlación para los
datos dados. Luego, utilice la
fórmula de regresión para estimar
la presión atmosférica a 18°C y
temperatura en 1000 hPa.
Ingrese el modo REG (Regresión lineal)
A m = (Borrado de memoria)
10
P 1003 S 15 P 1005 S
20 P 1010 S 25 P 1011 S
30 P 1014 S
(Coeficiente de regresión A) A q =
(Coeficiente de regresión B) A w =
(Coeficiente de correlación r) A J =
(Presión atmosférica a 18°C) 18 A b
(Temperatura en 1000 hPa) 1000 A O
•Regresión cuadrática
La fórmula de regresión para la regresión cuadrática es:
y = A + Bx +Cx
2
.
•Ingrese los datos usando la secuencia de tecla siguiente.
<datos
x> P <datos y> S
•Ejemplo:
Realizar la regresión cuadrática para
determinar los términos de la fórmula de
regresión y coeficiente de correlación para
los datos próximos. Luego, usar la fórmula
de regresión para estimar los valores para
n (valor estimado de y) para xi = 16 y m
(valor estimado de x) para yi = 20.
Te m peratura
Presión
atmosférica
10°C 1003 hPa
15°C 1005 hPa
20°C 1010 hPa
25°C 1011 hPa
30°C 1014 hPa
fx-85W: F F 2 1
Otros modelos: q 3 1
x
i
y
i
29 1,6
50 23,5
74 38,0
103 46,4
118 48,0
30.
00
REG
997.4
00
0.56
00
0.982607368
00
1007.48
00
4.642857143
00
23


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