EXAMEN DE ESTADISTICA
Enviado por emnegardo1 • 17 de Mayo de 2022 • Examen • 273 Palabras (2 Páginas) • 41 Visitas
[pic 1]PREGUNTA 1:
SOLUCIÓN:
PUNTOS MEDIOS | [pic 2] | [pic 3] | [pic 4] | [pic 5] | [pic 6] | [pic 7] | [pic 8] | [pic 9] | [pic 10] |
45 | 10 | 11 | 450 | 495 | -26.3 | -25.1 | 691.69 | 630.01 | 660.13 |
55 | 15 | 18 | 825 | 990 | -16.3 | -15.1 | 265.69 | 228.01 | 246.13 |
65 | 22 | 19 | 1430 | 1235 | -6.3 | -5.1 | 39.69 | 26.01 | 32.13 |
75 | 20 | 25 | 1500 | 1875 | 3.7 | 4.9 | 13.69 | 24.01 | 18.13 |
85 | 21 | 15 | 1785 | 1275 | 13.7 | 14.9 | 187.69 | 222.01 | 204.13 |
95 | 12 | 12 | 1140 | 1140 | 23.7 | 24.9 | 561.69 | 620.01 | 590.13 |
TOTAL | 100 | 100 | 7130 | 7010 | -71.3 | -70.1 | 1760.14 | 1750.06 | 1750.78 |
MEDIA DE X:
[pic 11]
MEDIA DE Y:
[pic 12]
COEFICIENTE DE CORRELACIÓN:
[pic 13]
[pic 14]PREGUNTA 2:
SOLUCIÓN:
- TABLA DE DISTRIBUCIÓN DE FRECUENCIA:
MAX | MIN | RANGO | N° INTER. | AMPLITUD | ||
140 | 90 | 50 | [pic 15] [pic 16] 6.28 = 6 | [pic 17] |
INTERALOS | [pic 18] | [pic 19] | [pic 20] | [pic 21] | [pic 22] |
90 – 98 | 94 | 7 | 7 | 0.175 | 0.175 |
98 – 106 | 102 | 9 | 16 | 0.225 | 0.400 |
106 – 114 | 110 | 13 | 29 | 0.325 | 0.725 |
114 – 122 | 118 | 3 | 32 | 0.075 | 0.800 |
122 – 130 | 122 | 4 | 36 | 0.100 | 0.900 |
130 – 140 | 135 | 4 | 40 | 0.100 | 1.000 |
TOTALES | 40 | 1.000 |
- MEDIDAS DE TENDENCIA CENTRAL:
- MEDIA:
[pic 23]
- MODA:
[pic 24]
[pic 25]
[pic 26]
- MEDIANA:
[pic 27]
[pic 28]
[pic 29]
- MEDIDAS DE POSICIÓN:
- PRIMER CUARTIL (Q1):
[pic 30]
[pic 31]
[pic 32]
- TERCER CUARTIL (Q3):
[pic 33]
[pic 34]
[pic 35]
- TERCER DECIL (D3):
[pic 36]
[pic 37]
[pic 38]
- OCTAVO DECIL (D8):
[pic 39]
[pic 40]
[pic 41]
- DESVIACIÓN CUARTIL:
[pic 42]
- MEDIDAS DE FORMA
- DESVIACIÓN ESTANDAR:
[pic 43]
[pic 44]
- VARIANZA:
[pic 45]
[pic 46]
- ASIMETRÍA:
[pic 47]
[pic 48]PREGUNTA 3:
- TABLA DE FRECUENCIA:
INTERVALO | Xi | fi | Fi | hi | Hi |
30 – 39 | 34.5 | 4 | 4 | 0.071 | 0.071 |
39 – 48 | 43.5 | 5 | 9 | 0.089 | 0.161 |
48 – 57 | 52.5 | 7 | 16 | 0.125 | 0.286 |
57 – 66 | 61.5 | 12 | 28 | 0.214 | 0.500 |
66 – 75 | 70.5 | 11 | 39 | 0.196 | 0.696 |
75 – 84 | 79.5 | 10 | 49 | 0.179 | 0.875 |
84 – 95 | 89.5 | 7 | 56 | 0.125 | 1.000 |
TOTAL | 56 | 1.000 |
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