Metodos numericos

X(PESOS) | 74 | 62 | 84 | 64 | 80 | 78 | 80 | 80 | 58 | 73 |
Y(ALTURAS) | 1.93 | 1.80 | 1.72 | 1.75 | 1.90 | 1.82 | 1.93 | 1.85 | 1.63 |1.70 |

HALLAR
* COEFICIENTE DE CORRELACIONEscriba aquí la ecuación.
* RECTA DE REGRESION
* ALTURA DE UNA PERSONA DE 70KILOGRAMOS
| xi | yi | xi2 | yi2 | xi. yi |
1 | 74 | 1.93 | 5476 | 3,7249 | 142,82 |
2 | 62 | 1.80 | 3844 | 3,2400 | 111,60 |
3 | 84 |1.72 | 7052 | 2,9584 | 144,48 |
4 | 64 | 1.75 | 4096 | 3,0625 | 112,00 |
5 | 80 | 1.90 | 6400 | 3,6100 | 152,00 |
6 | 78 | 1.82 |6084 | 3,3124 | 141,96 |
7 | 80 | 1.93 | 6400 | 3,7249 | 154,40 |
8 | 80 | 1.85 | 6400 | 3,4225 | 148,00 |
9 | 58 | 1.63 | 3364 |2,6569 | 94,540 |
10 | 73 | 1.70 | 5329 | 2,8900 | 124,10 |
i | 733 | 18,03 | 54449 | 32,6025 | 1325,9 |

x=73310=73,3
y=18,0310=1,083δx=5444910-(73,3)2=8,48

δy=32,602510-(1083)2=0.097

δxy=1325,910-73,31,803=0.4301
I.- z=0,43018,48(0,097)=0,52
II.-y=1,803+0,4301(8,48)2(x-73,3)
y=1,803+0,00598x-0,438
y=0,00598x+1,365

III.-y70=0,0059870+1,365
y70=1,7836 mt.

ECUACIONES

1. MEDIA O PROMEDIO
x=xin

y=yin
2. DESVIACION TIPICAδx=xi2n-(x)2
δy=yi2n-(y)2

3. COVARIANZA
δxy=xiyin-xy

4. COEFICIENETE DE CORRELACIÓN

z=δxyδx . δy